Shareholders' Equity (Narrative) (Details) - USD ($)			1 Months Ended	3 Months Ended
	Apr. 20, 2022	Jul. 29, 2016	Feb. 28, 2021	Mar. 31, 2022	Mar. 31, 2021	May 31, 2022
Equity Class Of Treasury Stock [Line Items]
Shares repurchase program, repurchased cost				$ 30,000,000.0	$ 10,000,000.0
Quarterly dividends declared	$ 0.231		$ 0.231
Dividends declared				$ 0.231	$ 0.21
Dividends payable, date to be paid, year and month				2022-03		2022-05
Common Stock
Equity Class Of Treasury Stock [Line Items]
Shares repurchase program, expiration date		Dec. 31, 2023
Stock repurchase program, remaining authorized repurchase amount				$ 483,800,000
Shares repurchase program, shares repurchased				(301,005)	(125,635)
Common Stock | Share Repurchase Program Excluding Accelerated Share Repurchase
Equity Class Of Treasury Stock [Line Items]
Shares repurchase program, shares repurchased				300,000
Shares repurchase program, repurchased cost				$ 30,000,000.0
Shares repurchase program, average price per share				$ 99.67
Common Stock | Share Repurchase Program Including Accelerated Share Repurchase
Equity Class Of Treasury Stock [Line Items]
Shares repurchase program, shares repurchased				10,800,000
Shares repurchase program, repurchased cost				$ 716,200,000
Shares repurchase program, average price per share				$ 66.27
Common Stock | Maximum [Member]
Equity Class Of Treasury Stock [Line Items]
Shares repurchase program, authorized amount		$ 1,200,000,000.0