Revision of Previously Issued Financial Statements Balance Sheet (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Deferred income taxes	$ 189	$ 199
Total assets	4,642	4,346	$ 4,351
Accounts payable	1,594	1,501
Accrued Income Taxes, Current	41	39
Liabilities, Current	2,081	1,973
Deferred credits and other liabilities	150	139
Liabilities	3,903	3,686
Redeemable noncontrolling interests	48	40
Retained earnings (accumulated deficit)	(1,054)	(1,100)
Stockholders' Equity Attributable to Parent	637	573
Stockholders' Equity Attributable to Noncontrolling Interest	54	47
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	691	620	544
Liabilities and Equity	4,642	4,346
As Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Deferred income taxes	184	195
Total assets	4,637	4,342
Accounts payable	1,587	1,496
Accrued Income Taxes, Current	44	41
Liabilities, Current	2,077	1,970
Deferred credits and other liabilities	121	116
Liabilities	3,870	3,660
Redeemable noncontrolling interests	52	43
Retained earnings (accumulated deficit)	(1,035)	(1,085)
Stockholders' Equity Attributable to Parent	656	588
Stockholders' Equity Attributable to Noncontrolling Interest	59	51
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	715	639	554
Liabilities and Equity	4,637	4,342
Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Deferred income taxes	5	4
Total assets	5	4
Accounts payable	7	5
Accrued Income Taxes, Current	(3)	(2)
Liabilities, Current	4	3
Deferred credits and other liabilities	29	23
Liabilities	33	26
Redeemable noncontrolling interests	(4)	(3)
Retained earnings (accumulated deficit)	(19)	(15)
Stockholders' Equity Attributable to Parent	(19)	(15)
Stockholders' Equity Attributable to Noncontrolling Interest	(5)	(4)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	(24)	(19)	$ (10)
Liabilities and Equity	$ 5	$ 4