Costs Associated with Rationalization Programs - Roll-Forward of Liability Balance (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Restructuring Reserve
Beginning Balance	$ 213	$ 219	$ 103
New Charges	64	135	218
Incurred, Net of Foreign Currency Translation	(177)	(128)	(93)
Reversed to the Statement of Operations	(19)	(13)	(9)
Ending Balance	81	213	219
Rationalizations	44	135	210
Payments for legal settlements			6
Associate-related Costs
Restructuring Reserve
Beginning Balance	210	214	96
New Charges	47	103	202
Incurred, Net of Foreign Currency Translation	(158)	(94)	(75)
Reversed to the Statement of Operations	(19)	(13)	(9)
Ending Balance	80	210	214
Foreign currency translation	(3)	25	(13)
Other Costs
Restructuring Reserve
Beginning Balance	3	5	7
New Charges	17	32	16
Incurred, Net of Foreign Currency Translation	(19)	(34)	(18)
Reversed to the Statement of Operations	0	0	0
Ending Balance	1	3	5
Foreign currency translation	0	1	0
Benefit Plan Curtailments and Settlements
Restructuring Reserve
Rationalizations	$ (1)	$ 13	$ 1

Restructuring Charges, Excluding Reversals and Pension Gains

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Restructuring Reserve, Settled With Cash And Non-Cash Considerations

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The amount of cash paid for the settlement of litigation or for other legal issues during the period.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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Amount of expense (reversal of expense) which increases (decreases) the restructuring reserve from an adjustment to a previously accrued restructuring liability.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of foreign currency translation gain (loss) which decreases (increases) the restructuring reserve.

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