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Costs Associated with Rationalization Programs - Roll-Forward of the Rationalization Liability Between Periods (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Restructuring Reserve [Roll Forward]
Beginning balance		$ 81
2019 Charges		131
Incurred, including net Foreign Currency Translation of $(6) million and $0 million, respectively		(52)
Reversed to the Statement of Operations	$ (1)	(3)	$ (13)
Ending balance		157
Associate Severance and Other Related Costs
Restructuring Reserve [Roll Forward]
Beginning balance		80
2019 Charges		117
Incurred, including net Foreign Currency Translation of $(6) million and $0 million, respectively		(38)
Reversed to the Statement of Operations		(3)
Ending balance		156
Foreign currency translation gain		6
Other Exit Costs
Restructuring Reserve [Roll Forward]
Beginning balance		1
2019 Charges		14
Incurred, including net Foreign Currency Translation of $(6) million and $0 million, respectively		(14)
Reversed to the Statement of Operations		0
Ending balance		1
Foreign currency translation gain		$ 0

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- Definition

Restructuring Charges, Excluding Reversals and Pension Gains

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- Definition

Restructuring Reserve, Settled With Cash And Non-Cash Considerations

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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
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- Definition

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

+ References

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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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