Stockholders' Equity - Narrative (Details)	1 Months Ended	3 Months Ended
	Jul. 31, 2015 $ / shares	Jun. 30, 2016 USD ($) vote $ / shares shares	Jun. 30, 2015 USD ($) $ / shares
Equity [Abstract]
Share of common stock outstanding, vote on proposals | vote		1
Dividends declared per common share (in dollars per share) | $ / shares	$ 0.28	$ 0.28	$ 0.24
Stock repurchased during the period (shares) | shares		0
Stock repurchases during the period		$ 0
Authorized amount available for future repurchases		1,000,000,000
Translation loss attributable to redeemable noncontrolling interest		67,000,000
Net foreign currency translation gains attributable to noncontrolling interest			$ 50,000,000
Reclassified to income statement, net of income tax expense of nil and nil		20,000,000	0
Net actuarial losses attributable to redeemable noncontrolling interest		$ 1,000,000	$ 6,000,000