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Number of previously issued common shares repurchased by the issuing entity and held in treasury.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Earnings Per Share (Current Stock Repurchase Program) (Details) $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2026 USD ($) amendment shares	Jun. 30, 2026 USD ($)	Mar. 31, 2026 USD ($) shares	Sep. 30, 2025 USD ($)	Jun. 30, 2025 USD ($)	Mar. 31, 2025 USD ($)	Sep. 30, 2026 USD ($) amendment shares	Sep. 30, 2025 USD ($)	Feb. 28, 2026 USD ($)
Stock Repurchase Activity [Roll Forward]
Treasury Stock, Common, Shares, Beginning Balance \| shares			162,880,360				162,880,360
Treasury Stock, Common, Shares, Ending Balance \| shares	166,395,786						166,395,786
Repurchases	$ 75	$ 88	$ 87	$ 70	$ 70	$ 70
Share Repurchase Program
Stock Repurchase Activity [Roll Forward]
Treasury Stock, Common, Shares, Beginning Balance \| shares			138,400,000				138,400,000
Repurchases \| shares							3,500,000
Treasury Stock, Common, Shares, Ending Balance \| shares	141,900,000						141,900,000
Treasury Stock, Value, Beginning Balance			$ 6,946				$ 6,946
Repurchases							250
Treasury Stock, Value, Ending Balance	$ 7,196						7,196
Stock Repurchase Program, Authorized Amount	7,750						7,750
Remaining authorized amount under share repurchases	$ 671						671
Share Repurchase Program, Excise Tax							$ 2	$ 1
Share Repurchase Program \| Board of Directors
Stock Repurchase Activity [Roll Forward]
Number of share repurchase program increases \| amendment	11						11
Stock Repurchase Program, Authorized Amount									$ 750
Share Repurchase Program \| Option exercises
Stock Repurchase Activity [Roll Forward]
Stock Repurchase Program, Authorized Amount	$ 117						$ 117