| Metric | Q2 '24 | Q3 '24 | Q4 '24 | Q1 '25 | Q2 '25 | Q3 '25 | Q4 '25 | Q1 '26 |
|---|---|---|---|---|---|---|---|---|
| Total liabilities and stockholders' equity | $1.9T | $1.9T | $1.9T | $2.0T | $2.0T | $2.1T | $2.1T | $2.2T |
| Retained earnings | $207.3B | $210.7B | $214.2B | $217.4B | $221.3B | $225.2B | $228.9B | $232.5B |
| Total stockholders' equity | $176.4B | $183.3B | $179.1B | $181.1B | $181.1B | $181.2B | $181.1B | $178.4B |
| Treasury Stock, Value | $104.2B | $107.5B | $111.5B | $114.3B | $117.2B | $123.1B | $128.1B | $131.5B |
| Treasury stock | $104.2B | $107.5B | $111.5B | $114.3B | $117.2B | $123.1B | $128.1B | $131.5B |
| Additional paid-in capital | $60.4B | $60.6B | $60.8B | $60.3B | $60.7B | $61.0B | $61.3B | $60.9B |
| Debt Securities (Trading and AFS) - Accumulated Gross Unrealized Gain | -$48.8B | -$34.9B | -$48.8B | -$43.2B | -$43.1B | -$37.1B | -$34.4B | -$36.3B |
| Cumulative Gross Losses and Impairments | $41.2B | $31.7B | $41.3B | $37.8B | $37.8B | $33.9B | $32.4B | $32.9B |
| Preferred Stock Liquidation Preference Value | $17.4B | $19.4B | $19.4B | $19.4B | $17.4B | $17.4B | $17.4B | $16.1B |
| Preferred stock; $0.001 par value; 100 shares authorized; no shares issued and outstanding | $16.6B | $18.6B | $18.6B | $18.6B | $16.6B | $16.6B | $16.6B | $15.3B |
| Preferred stock | $16.6B | $18.6B | $18.6B | $18.6B | $16.6B | $16.6B | $16.6B | $15.3B |
| Common stock; $0.001 par value; 6,000 shares authorized; 3,755 and 3,751 shares issued and outstanding as of March 31, 2026 and December 31, 2025, respectively | $9.1B | $9.1B | $9.1B | $9.1B | $9.1B | $9.1B | $9.1B | $9.1B |
| Common stock | 9B | 9B | 9B | 9B | 9B | 9B | 9B | 9B |
| Accumulated other comprehensive income (loss) | -$12.7B | -$8.4B | -$12.2B | -$10.0B | -$9.4B | -$7.6B | -$6.7B | -$7.9B |
| Common Stock Shares Issued | 5.5B | 5.5B | 5.5B | 5.5B | 5.5B | 5.5B | 5.5B | 5.5B |
| Unrealized Losses on Investments (Before Tax) | $7.9B | $4.9B | $7.8B | $6.0B | $5.9B | $4.5B | $4.0B | $4.5B |
| Net Pretax Unrealized Gains/Losses in AOCI on AFS to HTM Transfer Date | $3.3B | $3.2B | $3.1B | -$3.0B | $2.9B | $2.8B | $2.7B | -$2.6B |
| Treasury Stock (Shares) | 2.1B | 2.1B | 2.2B | 2.2B | 2.3B | 2.3B | 2.4B | 2.4B |
| Noncontrolling interests | $1.7B | $1.7B | $1.9B | $1.8B | $1.8B | $1.9B | $1.9B | $1.9B |
| AFS and Trading Securities - Unrealized Loss Position (<12 Months) Accumulated Loss | $325.0M | $45.0M | $1.6B | $705.0M | $697.0M | $1.1B | $995.0M | $1.5B |
| Unrealized Gains on Investments | $176.0M | $1.5B | $155.0M | $552.0M | $551.0M | $1.3B | $1.9B | $992.0M |
| Cumulative Gross Unrealized Gains | $126.0M | $308.0M | $106.0M | $98.0M | $122.0M | $167.0M | $189.0M | $145.0M |
| Preferred Stock Shares Authorized | 4.7M | 4.7M | 4.7M | 4.7M | 4.7M | 4.7M | 4.7M | 4.6M |
| Convertible Preferred Stock Issued Shares | 4.6M | 4.7M | 4.7M | 4.7M | 4.6M | 4.6M | 4.6M | 4.6M |
| Preferred Stock As-Converted Value | 16.6 | 16.6 | 16.6 | 16.6 | 16.6 | 16.6 | 16.6 | 16.6 |
| Common Stock Par Value Per Share | $1.67 | $1.67 | $1.67 | $1.67 | $1.67 | $1.67 | $1.67 | $1.67 |
| Common Stock Shares Not Reserved | — | — | 3.3B | — | — | — | 3.3B | — |
| Shares Reserved for Future Issuance Under Stock Plans | — | — | 233.2M | — | — | — | 203.1M | — |
| Undistributed Earnings of Foreign Subsidiaries | — | — | $0.0 | — | — | — | $0.0 | — |