Restructuring Accruals (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Restructuring accrual
Beginning balance, restructuring reserve	$ 47	$ 70	$ 45	$ 69
Charges	5	24	72	56
Write-down of assets to net realizable value	(3)	(17)	(43)	(17)
Net cash paid, principally severance and related benefits	(10)	(12)	(32)	(41)
Other, including foreign exchange translation	(4)	(1)	(7)	(3)
Ending balance, restructuring reserve	35	64	35	64
Restructuring, Additional Information
Carrying value of impaired assets	1		1
Selling and administrative expense
Restructuring accrual
Charges				2
Other expense, net
Restructuring accrual
Charges				54
Employee Costs
Restructuring accrual
Beginning balance, restructuring reserve	30	50	32	47
Charges	2	5	23	32
Net cash paid, principally severance and related benefits	(10)	(6)	(31)	(30)
Other, including foreign exchange translation			(2)
Ending balance, restructuring reserve	22	49	22	49
Asset Impairment
Restructuring accrual
Charges	3	17	43	17
Write-down of assets to net realizable value	(3)	(17)	(43)	(17)
Other Exit Costs
Restructuring accrual
Beginning balance, restructuring reserve	17	20	13	22
Charges		2	6	7
Net cash paid, principally severance and related benefits		(6)	(1)	(11)
Other, including foreign exchange translation	(4)	(1)	(5)	(3)
Ending balance, restructuring reserve	$ 13	$ 15	$ 13	$ 15