Quarterly Results (Unaudited) - Additional Information (Details) - USD ($) $ in Millions		3 Months Ended				12 Months Ended
	Jan. 01, 2016	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Loss on sale of subsidiaries		$ 80				$ (80)
After tax loss on sale of subsidiaries		52
Change in valuation allowance	$ 32	(476)		$ 49	$ (100)
Loss on extinguishment of debt			$ 17			17	2	19
Impairment of long-lived assets					36		36
Impairment of long-lived assets, after tax					$ 24
Impairment of equity affiliate				39			39
Other tax expense				$ 23			23
BRAZIL
Change in valuation allowance		25
UNITED STATES
Change in valuation allowance		$ (501)					$ (66)	$ (179)