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Consolidated Statements of Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Stockholders' Equity [Abstract]
Net issuances of shares held in treasury in settlement of stock-based compensation (in shares)	249,064	314,953	374,267
Number of Shares	641,149	2,819,081	4,308,418
Repurchases of shares of common stock, average price (in dollars per share)	$ 109.22	$ 134.95	$ 163.69
Retirement of shares held in treasury (in shares)			8,000,000
Retirement of shares held in treasury, average price (in dollars per share)			$ 146.27

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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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