Earnings (Loss) Per Share and Stock Repurchase Program - Narrative (Details) - USD ($)			1 Months Ended	12 Months Ended
	Feb. 26, 2018	Jan. 16, 2018	Dec. 31, 2016	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Nov. 06, 2018
Equity, Class of Treasury Stock [Line Items]
Repurchase of common stock (shares)				5,039,034	9,022,386
Repurchase of common stock	$ 150,000,000.0			$ 178,100,000	$ 365,300,000	$ 32,300,000
Stock Purchase Agreement
Equity, Class of Treasury Stock [Line Items]
Repurchase of common stock (shares)		2,000,000.0				762,623
Repurchase of common stock		$ 75,300,000	$ 150,000,000.0			$ 25,000,000.0
Average cost per share of stock acquired (USD per share)		$ 37.64
Authorization remaining under aggregate stock repurchase program				$ 231,700,000
Common Stock
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Authorized Amount							$ 500,000,000.0