Capital Stock (Narrative) (Details) - USD ($)										1 Months Ended	12 Months Ended
	Dec. 21, 2021	Sep. 24, 2021	Jun. 25, 2021	Mar. 26, 2021	Dec. 22, 2020	Sep. 25, 2020	Jun. 19, 2020	Mar. 20, 2020	Jan. 30, 2020	Aug. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jan. 31, 2020
Class of Stock [Line Items]
Share repurchase program, additional amount authorized														$ 1,000,000,000
Available to repurchase common stock											$ 625,600,000
Amount expended on share repurchases in open market transactions												$ 288,483,000	$ 453,853,000
Total tax withholdings for share-based compensation (in shares)											870,057	893,479	882,078
Total tax withholding for share-based compensation											$ 115,491,000	$ 121,652,000	$ 89,213,000
Preferred stock, shares authorized (in shares)											5,000,000
Preferred stock, par value (in dollars per share)											$ 0.01
Preferred stock, shares issued											0	0
Preferred stock, shares outstanding (in shares)											0	0
Cash dividend paid (in dollars per share)	$ 0.37	$ 0.37	$ 0.37	$ 0.37	$ 0.35	$ 0.35	$ 0.35	$ 0.35
Open Market Purchases
Class of Stock [Line Items]
Amount expended on share repurchases in open market transactions											$ 0	$ 288,500,000	$ 453,900,000
Number of shares repurchased												2,500,000	4,500,000
Average per share price on share repurchases in open market transactions (in dollars per share)												$ 116.40	$ 100.11
ASR Counterparty
Class of Stock [Line Items]
Amount expended on share repurchases in open market transactions									$ 1,000,000,000
Number of shares repurchased									6,500,000	800,000