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Share Repurchases Share Repurchase Program (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Nov. 02, 2021	Apr. 24, 2019
Equity, Class of Treasury Stock [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.50%
Payments Related to Tax Withholding for Share-based Compensation	$ 35,122,000
Stock Repurchased During Period, Value	$ 123,161,000	$ 46,583,000	$ 101,768,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount				$ 250,000,000	$ 200,000,000
Treasury Stock Acquired, Average Cost Per Share	$ 44.40
Stock Repurchased During Period, Value	$ 88,039,000
Stock Repurchase Program, Authorized Amount	$ 223,551,000
Shares Paid for Tax Withholding for Share Based Compensation	791,000
London Interbank Offered Rate (LIBOR) [Member]
Equity, Class of Treasury Stock [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.00%
Common Stock [Member]
Equity, Class of Treasury Stock [Line Items]
Stock Repurchased During Period, Shares	2,050,000
Treasury Stock Acquired, Average Cost Per Share	$ 42.94

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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The cash outflow to reacquire common stock during the period.

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Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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