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Shareholders' Equity (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2014
Equity, Class of Treasury Stock [Line Items]
Cash dividends declared per share (in dollars per share)	$ 0.20	$ 0.20	$ 0.60	$ 0.60
Repurchase of shares (in shares)	0	0	440,000	1,057,115
Treasury Stock, Value, Acquired, Cost Method			$ 17,500,000	$ 32,100,000
Remaining authorized repurchase capacity	$ 96,100,000		$ 96,100,000
Share repurchase program 2014
Equity, Class of Treasury Stock [Line Items]
Authorized amount to be repurchased					$ 500,000,000

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Aggregate dividends declared during the period for each share of common stock outstanding.

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Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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