New Accounting Guidance (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Consolidated Statement of Cash Flows
Other current assets	$ (6)	$ (37)	$ (6)
Other assets	(15)
Accrued income taxes	37
Other liabilities	(59)
Net cash provided by operations	112	229	112
Proceeds from debt	494	347	494
Net cash used for financing activities	(494)	$ (376)	$ (494)
Scenario, Previously Reported
Consolidated Statement of Cash Flows
Other current assets	39
Other assets	(62)
Accrued income taxes	31
Other liabilities	(57)
Net cash provided by operations	106
Proceeds from debt	500
Net cash used for financing activities	(488)
Accounting Standards Update 2015-17 | Restatement Adjustment
Consolidated Statement of Cash Flows
Other current assets	(46)
Other assets	42
Accrued income taxes	6
Other liabilities	(2)
Net cash provided by operations	0
Proceeds from debt	0
Net cash used for financing activities	0
Accounting Standards Update 2015-03 | Restatement Adjustment
Consolidated Statement of Cash Flows
Other current assets	1
Other assets	5
Accrued income taxes	0
Other liabilities	0
Net cash provided by operations	6
Proceeds from debt	(6)
Net cash used for financing activities	$ (6)