Segment Reporting - Reconciliation Of Operating Profit Loss (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) business	Sep. 30, 2015 USD ($)
Segment Reporting [Abstract]
Segment Profit (Loss)	$ 97	$ (293)	$ 245	$ (160)
Reconciling items:
Amortization of intangible assets	(63)	(62)	(200)	(187)
Restructuring and related costs	(8)	(9)	(57)	(160)
Business transformation costs	0	0	0	(3)
Related party interest	(10)	(14)	(30)	(50)
Separation costs	(15)	0	(34)	0
Other	1	(12)	(10)	(22)
Income (Loss) before Income Taxes	$ 2	$ (390)	$ (86)	$ (582)
Number of Publicly Traded Companies | business			2