CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Millions	Total	Shares Issued [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Shares [Member]	Noncontrolling Interest [Member]
Balance, beginning balance at Dec. 31, 2013	$ 8,203	$ 775	$ 4,600	$ 3,011	$ (187)	$ (37)	$ 41
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Loss	(539)	0	0	(584)	0	0	45
Other Comprehensive Loss	(694)	0	0	0	(694)	0	0
Noncontrolling Interest in Net Income (Loss) Joint Venture Partners, Redeemable	27	0	0	0	0	0	27
Dividends Paid to Noncontrolling Interests	(39)	0	0	0	0	0	(39)
Change in Common Shares Associated with Redomestication	11	(778)	750	0	0	39	0
Equity Awards Granted, Vested and Exercised	(56)	(4)	(54)	0	0	(2)	0
Excess Tax Benefit of Share-Based Compensation Plans	7	0	7	0	0	0	0
Other	1	0	0	0	0	0	1
Balance, ending balance at Dec. 31, 2014	7,033	1	5,411	2,427	(881)	0	75
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Loss	(1,951)	0	0	(1,985)	0	0	34
Other Comprehensive Loss	(760)	0	0	0	(760)	0	0
Dividends Paid to Noncontrolling Interests	(48)	0	0	0	0	0	(48)
Equity Awards Granted, Vested and Exercised	(91)	0	(91)	0	0	0	0
Balance, ending balance at Dec. 31, 2015	4,365	1	5,502	442	(1,641)	0	61
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Loss	(3,373)	0	0	(3,392)	0	0	19
Other Comprehensive Loss	31	0	0	0	31	0	0
Dividends Paid to Noncontrolling Interests	(24)	0	0	0	0	0	(24)
Adjustments to Additional Paid in Capital, Convertible Debt with Conversion Feature	97	0	97	0	0	0	0
Equity Awards Granted, Vested and Exercised	(78)	0	(78)	0	0	0	0
Balance, ending balance at Dec. 31, 2016	2,068	1	6,571	(2,950)	(1,610)	0	56
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stocks, Including Additional Paid in Capital	894	$ 0	$ 894	$ 0	$ 0	$ 0	$ 0
Warrants and Rights Outstanding	$ 156