Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2020

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

Valuation and Qualifying Accounts

Valuation and Qualifying Accounts

	Balance at Beginning of Period		Provision		Other		Write-offs/ Disposition		Balance at End of Period
(in millions)
Reserve for Expected Credit Losses:
Year Ended December 31, 2020	$	29	$	17	$	—	$	(10)	$	36
Year Ended December 31, 2019	27		11		—		(9)		29
Year Ended December 31, 2018	33		37		(2)		(41)		27

	Balance at Beginning of Period		Provision		Other		Write-offs/ Disposition		Balance at End of Period
(in millions)
Inventory Reserves: (including excess, obsolescence and shrink reserves)
Year Ended December 31, 2020	$	78	$	68	$	2	$	(66)	$	82
Year Ended December 31, 2019	84		56		—		(62)		78
Year Ended December 31, 2018	75		54		(2)		(43)		84

	Balance at Beginning of Period		Provision		Other		Write-offs/ Recoveries		Balance at End of Period
(in millions)
Income Tax Valuation Allowance
Year Ended December 31, 2020	$	271	$	30	$	5	$	(93)	$	213
Year Ended December 31, 2019	195		122		(1)		(45)		271
Year Ended December 31, 2018	293		14		(27)		(85)		195