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Shareholders' Equity - Shares Repurchased and Reissued (Details) - USD ($) shares in Millions, $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Jul. 24, 2023
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Repurchase of common shares | $ 566 | $ 502 | $ 1,272 | $ 1,159 |
Stock repurchase program, authorized amount |  |  |  |  | $ 3,500
Remaining balance under stock repurchase program | $ 2,100 |  | $ 2,100 |  |
Reissuance of treasury stock (in shares) |  |  | 0.7 | 0.6 |
Common Stock Repurchases |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Repurchase of common shares (in shares) |  |  | 2.5 | 3.2 |
Repurchase of common shares |  |  | $ 1,000 | $ 998 |
Restricted Stock Units Repurchases |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Repurchase of common shares (in shares) |  |  | 0.3 | 0.3 |
Repurchase of common shares |  |  | $ 104 | $ 88 |
Option Repurchases |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |
Repurchase of common shares (in shares) |  |  | 0.3 | 0.2 |
Repurchase of common shares |  |  | $ 119 | $ 73 |

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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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