Equity (Common Stock Changes in Number of Shares Issued, Held in Treasury and Outstanding) (Details) - shares	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning (in shares)	666,305,189
Balance, ending (in shares)	666,305,189	666,305,189
Issued
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning (in shares)	666,300,000	666,300,000	666,300,000
Common Stock issued (in shares)	0.0	0.0	0.0
Common Stock acquired	(0.0)	(0.0)	(0.0)
Stock-based compensation programs (in shares)	(0.0)	(0.0)	(0.0)
Balance, ending (in shares)	666,300,000	666,300,000	666,300,000
Held In Treasury
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning (in shares)	300,300,000	290,000,000.0	269,900,000
Common Stock issued (in shares)	0.0	0.0	0.0
Common Stock acquired	10,900,000	14,500,000	24,500,000
Stock-based compensation programs (in shares)	(4,100,000)	(4,200,000)	(4,400,000)
Balance, ending (in shares)	307,100,000	300,300,000	290,000,000.0
Outstanding
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning (in shares)	366,000,000.0	376,300,000	396,400,000
Common Stock issued (in shares)	0.0	0.0	0.0
Common Stock acquired	10,900,000	14,500,000	24,500,000
Stock-based compensation programs (in shares)	4,100,000	4,200,000	4,400,000
Balance, ending (in shares)	359,200,000	366,000,000.0	376,300,000

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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Number of new stock issued during the period.

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Number, after forfeiture, of shares or units issued under share-based payment arrangement. Excludes shares or units issued under employee stock ownership plan (ESOP).

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

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