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Shareholders' Equity - Shares Repurchased and Reissued (Details) - USD ($) shares in Millions, $ in Millions | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Apr. 22, 2025 | Jul. 24, 2023
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Repurchase of common shares | $ 715 | $ 599 | $ 2,051 | $ 1,871 |  |
Stock repurchase program, authorized amount |  |  |  |  | $ 4,500 | $ 3,500
Remaining balance under stock repurchase program | $ 3,500 |  | $ 3,500 |  |  |
Reissuance of treasury stock (in shares) |  |  | 0.7 | 0.7 |  |
Common Stock Repurchases |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Repurchase of common shares (in shares) |  |  | 3.7 | 3.8 |  |
Repurchase of common shares |  |  | $ 1,900 | $ 1,600 |  |
Restricted Stock Units Repurchases |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Repurchase of common shares (in shares) |  |  | 0.2 | 0.3 |  |
Repurchase of common shares |  |  | $ 132 | $ 110 |  |
Option Repurchases |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Repurchase of common shares (in shares) |  |  | 0.1 | 0.4 |  |
Repurchase of common shares |  |  | $ 66 | $ 149 |  |

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- Definition Number of treasury shares or units reissued. Excludes reissuance of shares or units in treasury for award under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -SubTopic 10 -Topic 505 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1 + Details
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