Restructuring Accruals (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Restructuring accrual
Beginning balance, restructuring reserve	$ 34	$ 53	$ 45	$ 69
Charges	67	32	67	32
Write-down of assets to net realizable value	(40)		(40)
Net cash paid, principally severance and related benefits	(14)	(14)	(22)	(29)
Other, including foreign exchange translation		(1)	(3)	(2)
Ending balance, restructuring reserve	47	70	47	70
Restructuring, Additional Information
Carrying value of impaired assets	1		1
Selling and administrative expense
Restructuring accrual
Charges		2		2
Other expense, net
Restructuring accrual
Charges		30		30
Employee Costs
Restructuring accrual
Beginning balance, restructuring reserve	22	34	32	47
Charges	21	27	21	27
Net cash paid, principally severance and related benefits	(13)	(11)	(21)	(24)
Other, including foreign exchange translation			(2)
Ending balance, restructuring reserve	30	50	30	50
Asset Impairment
Restructuring accrual
Charges	40		40
Write-down of assets to net realizable value	(40)		(40)
Other Exit Costs
Restructuring accrual
Beginning balance, restructuring reserve	12	19	13	22
Charges	6	5	6	5
Net cash paid, principally severance and related benefits	(1)	(3)	(1)	(5)
Other, including foreign exchange translation		(1)	(1)	(2)
Ending balance, restructuring reserve	$ 17	$ 20	$ 17	$ 20