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Stockholders' Equity - Schedule Of Stock Repurchase Activities (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Equity, Class of Treasury Stock [Line Items]
Value of shares repurchased (in dollars per share)		$ 134.3	$ 269.5
Common Stock
Equity, Class of Treasury Stock [Line Items]
Shares repurchased (in shares)		700	1,700
Common Stock Repurchase Program | Common Stock
Equity, Class of Treasury Stock [Line Items]
Shares repurchased (in shares)	0	700	1,700
Average price per share (in dollars per share)	$ 0	$ 183.84	$ 160.45
Value of shares repurchased (in dollars per share)	$ 0.0	$ 134.3	$ 269.5

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Number of shares that have been repurchased and retired during the period.

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