Stockholders' Equity - Capital Stock and Share Repurchases (Details) $ / shares in Units, $ in Millions	3 Months Ended
	Jun. 30, 2017 USD ($) vote $ / shares shares	Apr. 03, 2017 shares	Mar. 31, 2017 $ / shares shares
Equity [Abstract]
Common stock, authorized (in shares)	750,000,000		750,000,000
Common stock, par value (in dollars per share) | $ / shares	$ 0.01		$ 0.01
Preferred stock, authorized (in shares)	1,000,000		1,000,000
Preferred stock, par value (in dollars per share) | $ / shares	$ 0.01		$ 0.01
Number of votes per common share | vote	1
Stock Repurchase Program [Abstract]
Initial authorization (in shares)		2,000,000,000
Number of shares repurchased (in shares)	250,000
Stock repurchased during period, value | $	$ 19
Accrued amount of stock repurchased value | $	$ 6
Weighted average price (in dollars per share) | $ / shares	$ 77.39