Costs Associated with Rationalization Programs - Roll-Forward of the Rationalization Liability Between Periods (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($)
Restructuring Reserve [Roll Forward]
Beginning balance	$ 213
2018 Charges	42
Incurred, including net Foreign Currency Translation of ($5) million and $0 million, respectively	(101)
Reversed to the Statements of Operations	(5)
Ending balance	149
Associate-Related Costs
Restructuring Reserve [Roll Forward]
Beginning balance	210
2018 Charges	34
Incurred, including net Foreign Currency Translation of ($5) million and $0 million, respectively	(93)
Foreign currency translation gain (loss)	(5)
Reversed to the Statements of Operations	(5)
Ending balance	146
Other Exit and Non-Cancelable Lease Costs
Restructuring Reserve [Roll Forward]
Beginning balance	3
2018 Charges	8
Incurred, including net Foreign Currency Translation of ($5) million and $0 million, respectively	(8)
Foreign currency translation gain (loss)	0
Reversed to the Statements of Operations	0
Ending balance	$ 3