Stockholders' Equity - Additional Information (Details) - USD ($)	3 Months Ended				9 Months Ended
	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Jan. 11, 2016
Equity [Abstract]
Cash dividends declared per share	$ 0.06	$ 0.06	$ 0.06	$ 0.06	$ 0.18	$ 0.18
Stock Repurchase Program, Authorized Amount							$ 1,700,000,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 219,000,000				$ 219,000,000