Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2020

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

Valuation and Qualifying Accounts

Schedule II – Valuation and Qualifying Accounts

(in millions)

Description	Balance at Beginning of Period		Expense (Benefit)		Other Adjustments(a)		Deductions		Balance at End of Period
Allowance for Doubtful Accounts:
Year Ended December 31,
2020	$	52	$	73	$	3	$	(68)	$	60
2019	39		41		—		(28)		52
2018	36		34		(2)		(29)		39
Tax Valuation Allowance:
Year Ended December 31,
2020	$	214	$	(1)	$	(6)	$	—	$	207
2019	311		(95)		(2)		—		214
2018	331		(3)		(17)		—		311

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(a)Other adjustments relate to currency translation adjustments.