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Earnings (Loss) Per Common Share and Stockholders' Equity (Share Repurchase Program and Treasury Stock) (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended	29 Months Ended
	Mar. 17, 2023	Mar. 31, 2023	Mar. 31, 2023	Dec. 31, 2022	Nov. 11, 2022	Nov. 19, 2021
Class of Stock [Line Items]
Share repurchase program, authorized amount					$ 400.0	$ 500.0
Treasury stock acquired, shares (in shares)		2,400,000	31,200,000
Treasury stock acquired, average price per common share (in dollars per share)			$ 34.76
Stock repurchase program, remaining authorized repurchase amount		$ 276.0	$ 276.0
Treasury stock, shares (in shares)		31,809,876	31,809,876	24,590,353
Treasury stock, carrying value		$ 1,075.0	$ 1,075.0	$ 823.1
Accelerated Share Repurchase (ASR)
Class of Stock [Line Items]
Share repurchase program, authorized amount	$ 200.0
Treasury stock acquired, shares (in shares)	4,800,000
Treasury stock, acquired, percentage	80.00%
Treasury stock acquired, average price per common share (in dollars per share)	$ 33.12

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