Company Restructuring (Details 2) $ in Millions	6 Months Ended
	Jun. 30, 2017 USD ($)
Restructuring Reserve
Balance as of December 31, 2016	$ 2
Expense incurred	52
Payments applied against liability	(6)
Balance as of June 30, 2017	48
Employee costs
Restructuring Reserve
Balance as of December 31, 2016	0
Expense incurred	36
Payments applied against liability	(2)
Balance as of June 30, 2017	34
Cumulative amount incurred to date for active programs	95
Exit costs
Restructuring Reserve
Balance as of December 31, 2016	2
Expense incurred	16
Payments applied against liability	(4)
Balance as of June 30, 2017	14
Cumulative amount incurred to date for active programs	$ 77