Restructuring and Asset Related Charges - Net - 2016 Plan (Details) - 2016 Restructuring [Member] $ in Millions		3 Months Ended	6 Months Ended
	Jun. 27, 2016 employees	Jun. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Dec. 31, 2017 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Number of Positions Eliminated | employees	2,500
Restructuring Reserve, Accrual Adjustment		$ 7	$ 6
Restructuring Reserve		33	33	$ 68
Payments for Restructuring			(41)
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Accrual Adjustment		(8)	(8)
Restructuring Reserve		6	6	51
Payments for Restructuring			(37)
Costs Associated with Exit and Disposal Activities [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Accrual Adjustment		15	14
Restructuring Reserve		$ 27	27	$ 17
Payments for Restructuring			$ (4)