| Rental Revenue | $1.8B | $1.8B | $1.9B | $1.9B | $1.9B | $2.0B | $2.0B | $2.1B |
| Cash Provided by (Used in) Operating Activity, Including Discontinued Operation | $1.1B | $1.1B | $1.1B | $1.4B | $1.3B | $1.2B | $1.2B | $1.4B |
| Operating Expenses Before Gains On Real Estate Transactions Net | $1.2B | $1.3B | $1.3B | $1.3B | $1.3B | $1.3B | $1.3B | $1.3B |
| Proceeds From Issuance Of Debt Excluding Line Of Credit | $8.1M | $1.9B | $1.2B | $1.3B | $222.1M | $520.2M | $1.3B | $1.2B |
| Cash Provided by (Used in) Investing Activity, Including Discontinued Operation | -$1.2B | -$1.1B | -$623.8M | -$1.7B | — | -$1.6B | -$1.0B | -$1.1B |
| Dividends And Other | — | -$962.2M | -$984.3M | -$958.9M | — | -$1.0B | -$1.0B | -$1.0B |
| Payments of Dividends | $808.6M | $891.8M | $892.8M | $892.9M | $893.0M | $939.9M | $941.6M | $941.3M |
| Operating Income Loss Before Gains Loss On Real Estate Transactions Net | $643.8M | $662.5M | $736.8M | $784.5M | $914.2M | $814.2M | $855.2M | $892.6M |
| Comprehensive Income Including Noncontrolling Interest | — | $864.6M | $1.0B | $637.7M | — | $405.9M | $197.8M | $851.4M |
| Comprehensive Income Attributable to Parent | — | $864.6M | $1.0B | $637.7M | — | $405.9M | $197.8M | $851.4M |
| Comprehensive Income Including Noncontrolling Interest | — | $864.6M | $1.0B | $637.7M | — | $405.9M | $197.8M | $851.4M |
| Comprehensive income (loss), including noncontrolling interest | — | $864.6M | $1.0B | $637.7M | — | $405.9M | $197.8M | $851.4M |
| Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest | — | $864.6M | $1.0B | $637.7M | — | $405.9M | $197.8M | $851.4M |
| Comprehensive Income (Loss), Total | — | $864.6M | $1.0B | $637.7M | — | $405.9M | $197.8M | $851.4M |
| Comprehensive Income, Including Noncontrolling Interest | — | $864.6M | $1.0B | $637.7M | — | $405.9M | $197.8M | $851.4M |
| Comprehensive Income Including Noncontrolling Interest | — | $864.6M | $1.0B | $637.7M | — | $405.9M | $197.8M | $851.4M |
| Total Comprehensive Income | — | $864.6M | $1.0B | $637.7M | — | $405.9M | $197.8M | $851.4M |
| Comprehensive Income (Loss), Net of Tax, Attributable to Parent | — | $814.5M | $990.7M | $589.5M | — | $363.6M | $155.3M | $793.7M |
| Other Comprehensive Income (Loss) | — | $814.5M | $990.7M | $589.5M | — | $363.6M | $155.3M | $793.7M |
| Reclassifications Net of Tax | $629.5M | $584.3M | $859.8M | $1.0B | $1.3B | $591.5M | $569.7M | $762.9M |
| Payments To Develop Real Estate Assets | — | $719.8M | $835.4M | $821.7M | — | $776.2M | $555.1M | $627.4M |
| Net Proceeds From Payments On Credit Facilities And Commercial Paper | -$141.8M | $54.0M | -$526.1M | — | -$395.9M | $299.2M | — | -$290.5M |
| Cash Provided by (Used in) Financing Activity, Including Discontinued Operation | — | $2.4M | -$355.8M | $445.1M | -$1.1B | -$275.6M | — | -$251.7M |
| Interest Paid, Net | — | $210.7M | $197.2M | $164.8M | — | $269.4M | $243.4M | $198.5M |
| Interest Paid, Excluding Capitalized Interest, Operating Activity | — | $210.7M | $197.2M | $164.8M | — | $269.4M | $243.4M | $198.5M |
| Increase Decrease In Operating Liabilities | $17.7M | -$133.3M | -$76.1M | $266.2M | $137.7M | -$133.0M | — | $180.1M |
| Straight Line Rents And Amortization Of Above And Below Market Leases | $146.3M | $159.0M | $144.3M | $167.0M | $174.3M | $180.4M | $187.8M | $162.5M |
| Distributions of earnings from equity method investees | $144.1M | $126.7M | $129.1M | $161.5M | $145.2M | $138.9M | $153.4M | $162.4M |
| Management Fees Revenue | — | — | $154.7M | $135.4M | — | — | $147.2M | $150.4M |
| Payments For Leasing Costs Commissions And Tenant Improvements | $117.8M | $104.3M | $111.4M | $131.8M | $152.4M | $123.1M | $152.2M | $138.2M |
| Repurchase Of And Repayments On Debt Excluding Line Of Credit | $1.9M | $913.9M | $1.7M | $1.9M | $1.9M | $71.2M | $1.2M | $136.7M |
| Payment For Property Improvements | $146.5M | $30.2M | $96.1M | $122.6M | $137.6M | $34.4M | $68.8M | $109.4M |
| Gain Loss On Foreign Currency Derivative And Other Gains Losses And Other Income Expense Net | — | $63.6M | $37.2M | -$37.9M | $146.0M | -$31.7M | -$122.8M | $101.0M |
| Cash disbursed for acquisitions | $546.8M | $126.2M | $399.4M | $1.3B | $507.3M | $779.7M | $374.0M | $92.8M |
| Increase (Decrease) in Other Operating Assets | $168.9M | $11.8M | $41.5M | $156.6M | $131.7M | -$23.0M | $63.2M | $87.3M |
| Proceeds From Real Estate And Real Estate Joint Ventures | $453.9M | $199.5M | $851.0M | $738.4M | $2.0B | $157.0M | $99.4M | $84.5M |
| Payments To Minority Shareholders Excluding Parent Company Distributions | $57.0M | $70.4M | $91.5M | $66.0M | $67.9M | $75.0M | $73.5M | $82.2M |
| Real Estate Acquisition Cost Acquired During Period Excluding Other Real Estate Investments | — | $284.0M | $283.5M | $1.4B | — | $739.5M | $195.3M | $77.4M |
| Service Management Costs | — | — | $70.5M | $61.3M | — | — | $64.9M | $69.3M |
| Net Income Loss Attributable To Noncontrolling Interest | — | $45.1M | $50.2M | $57.7M | — | $46.6M | $51.1M | $57.0M |
| Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture | — | $69.9M | $63.3M | $46.7M | — | $57.6M | $49.4M | $46.7M |
| Stock-based compensation | $57.6M | $67.2M | $54.5M | $42.5M | $67.4M | $53.2M | $44.0M | $44.5M |
| Unrealized Gain Loss On Foreign Currency Transaction Mark To Market Derivatives | — | $29.0M | $6.0M | -$67.0M | — | -$40.0M | -$91.0M | $34.0M |
| Noncontrolling Interest Increase From Sale Of Parent Equity Interest | — | $1.3M | $4.8M | $15.2M | — | $13.2M | $13.2M | $32.7M |
| Proceeds from Noncontrolling Interests | $19.3M | $1.3M | $4.8M | $15.2M | $51.8M | $13.2M | $13.2M | $32.7M |
| Gains On Other Dispositions Of Investments In Real Estate Net | $2.6M | $17.5M | $199.3M | $434.4M | $252.8M | $36.8M | $47.0M | $32.2M |
| Weighted Average Potentially Dilutive Shares And Units Outstanding | — | 32.7M | 31M | 30.6M | — | 32M | 30.5M | 30.1M |
| Foreign Currency Translation Gains (Losses) | — | $209.0M | $120.5M | -$417.1M | — | -$230.7M | -$429.0M | $26.4M |
| OCI Foreign Currency Gain (Loss) Arising During Period, Net of Tax | — | $209.0M | $120.5M | -$417.1M | — | -$230.7M | -$429.0M | $26.4M |
| Currency Translation Adjustment, Net of Tax | — | $209.0M | $120.5M | -$417.1M | — | -$230.7M | -$429.0M | $26.4M |
| Incremental Common Shares Attributable To Conversion Of Common Limited Partnership Units | — | 23.6M | 23.2M | 23.2M | — | 23.5M | 22.7M | 22.8M |
| Amortization Of Financing Costs And Discounts | $19.1M | $18.0M | $20.1M | $20.3M | $20.4M | $20.8M | $21.9M | $21.7M |
| Noncontrolling Interest In Net Income Loss Limited Partnerships Nonredeemable | — | -$14.9M | -$21.6M | -$25.1M | — | -$15.0M | -$13.9M | -$18.8M |
| Payments To Investments In And Advances To Unconsolidated Entities | $38.1M | $314.8M | $49.7M | $115.4M | $60.7M | $27.4M | $5.2M | $18.1M |
| Proceeds from Equity Method Investment, Distribution, Return of Capital | $43.4M | $1.4M | $16.0M | $36.7M | $4.3M | $28.3M | $30.7M | $17.1M |
| Gains On Dispositions Of Development Properties And Land Net | $188.4M | $40.3M | $87.2M | $32.0M | $254.3M | $27.5M | $10.5M | $15.4M |
| Net Gains On Dispositions Of Development Properties And Land Net | — | $40.3M | $87.2M | $32.0M | — | $27.5M | $10.5M | $15.4M |
| Other Real Estate Acquisition Cost Acquired During Period | — | $167.0K | $50.1M | $184.8M | — | $59.9M | $220.5M | $15.4M |
| Income Taxes Paid, Net | — | $58.1M | $28.4M | $18.2M | — | $44.0M | $47.6M | $14.1M |
| Income Taxes Paid, Net | — | $58.1M | $28.4M | $18.2M | — | $44.0M | $47.6M | $14.1M |
| Other Real Estate Revenue | — | — | $836.0K | $3.9M | — | — | $11.4M | $9.3M |
| Payments for hedge | — | — | — | — | — | — | — | $9.2M |
| Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount | — | $15.5M | $9.6M | $9.0M | — | $11.6M | $7.3M | $7.7M |
| Payment Of Financing And Stock Issuance Costs | $340.0K | $13.1M | $6.7M | $9.2M | $2.0M | $2.6M | $22.7M | $5.4M |
| Deferred taxes | $7.9M | $334.0K | $10.2M | — | $19.0M | $6.7M | — | -$5.3M |
| Add - Incremental shares under stock-based compensation plans (in shares) | — | $5.0M | $3.7M | $4.2M | — | $5.2M | $4.7M | $4.9M |
| Net gains (losses) deferred | — | $24.8M | $10.7M | -$8.7M | — | -$2.9M | $4.4M | $3.7M |
| Increase Decrease In Operating Receivables From Unconsolidated Entities | — | -$44.8M | — | -$15.5M | — | -$16.6M | — | -$3.4M |
| Tax Withholding for Share-Based Payments | $4.7M | $21.7M | $205.0K | $5.0M | $3.6M | $15.4M | — | $3.3M |
| Payment, Tax Withholding, Share-Based Payment Arrangement | $4.7M | $21.7M | $205.0K | $5.0M | $3.6M | $15.4M | — | $3.3M |
| Payments For Repurchase Of Redeemable Noncontrolling Interest | $48.0K | $246.0K | $253.0K | $0.0 | $1.2M | $4.0M | $13.9M | $2.0M |
| Stock Issued During Period Value Redemptions Of Non Controlling Interests | — | -$246.0K | -$253.0K | — | — | -$4.0M | -$704.0K | -$1.6M |
| OCI Attributable to Noncontrolling Interest | — | $5.0M | $1.8M | -$9.6M | — | -$4.3M | -$8.6M | $691.0K |
| Square Footage Of Real Estate Property Operating Properties Purchased | — | $0.0 | $2.3M | $8.8M | — | $2.3M | $1.0M | $600.0K |
| Acres Of Real Estate Property | — | $243.0 | $122.0 | $342.0 | — | $122.0 | $326.0 | $38.0 |
| Number Of Contracts Exercised | — | 45.00 | 86.00 | 30.00 | — | 26.00 | 26.00 | 31.00 |
| Common Stock Dividends Per Share (Paid) | — | $1.0 | $1.0 | $1.0 | — | $1.0 | $1.0 | $1.0 |
| Common stock dividends per share cash paid | — | $1.0 | $1.0 | $1.0 | — | $1.0 | $1.0 | $1.0 |
| Common Stock Dividends Per Share (Cash Paid) | — | $1.0 | $1.0 | $1.0 | — | $1.0 | $1.0 | $1.0 |
| Common Dividends Per Share Paid | — | $1.0 | $1.0 | $1.0 | — | $1.0 | $1.0 | $1.0 |
| Cash Dividend per Common Share | — | $1.0 | $1.0 | $1.0 | — | $1.0 | $1.0 | $1.0 |
| Common Unit Distributions Per Unit Cash Paid | — | $0.96 | $0.96 | $0.96 | — | $1.01 | $1.01 | $1.01 |
| Number Of Real Estate Properties Purchased | — | 0.00 | 8.00 | 46.00 | — | 7.00 | 3.00 | 1.00 |
| Effect of currency exchange rate changes on cash, cash equivalents, and restricted cash | — | -$3.6M | -$9.1M | $13.7M | -$26.1M | $17.8M | $6.3M | — |
| Non Cash Dividend | — | $51.1M | — | — | — | — | — | — |
| Noncash Or Part Noncash Acquisition Liability For Installment Payments | — | $150.1M | — | — | — | — | — | — |
| Number of reportable segments | — | $2.0 | — | — | — | $2.0 | — | — |
| Net cash related to derivative contracts under collateral exchange arrangements | — | $10.4M | $2.4M | — | — | $4.9M | — | — |
