Shareholders' Equity Share Repurchase (Details) - USD ($) shares in Thousands, $ in Millions	3 Months Ended	9 Months Ended
	Mar. 31, 2022	Sep. 30, 2021	Sep. 30, 2022	Dec. 31, 2021
Shareholders' Equity [Abstract]
Stock Repurchased and Retired During Period, Shares	1,840	1,900
Stock Repurchased and Retired During Period, Value	$ 99.9	$ 65.3
Cumulative shares repurchased under share repurchase program			18,810
Cumulative treasury stock, retired, cost method, amount			$ 540.9
Stock Repurchase Program, Authorized Amount			$ 1,500.0	$ 1,000.0