Schedule II - Valuation and Qualifying Accounts (Tables)

12 Months Ended

Dec. 31, 2021

SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]

Schedule of Valuation and Qualifying Accounts Disclosure

SCHEDULE II—VALUATION AND QUALIFYING ACCOUNTS AND RESERVES

			Additions
	Balance at Beginning of Period		Charged to Costs and Expenses		Deductions		Other Activity		Balance at End of Period
	(in millions)
December 31, 2021:
Allowance for doubtful accounts	$	40	$	22	$	(24)	$	(1)	$	37
Tax valuation allowance (a)	$	832	$	25	$	(78)	$	(13)	$	766
December 31, 2020:
Allowance for doubtful accounts	$	37	$	39	$	(39)	$	3	$	40
Tax valuation allowance (a)	$	1,075	$	84	$	(333)	$	6	$	832
December 31, 2019:
Allowance for doubtful accounts	$	38	$	9	$	(10)	$	—	$	37
Tax valuation allowance (a)	$	1,178	$	35	$	(137)	$	(1)	$	1,075

(a)Additions Charged to Costs and Expenses and Deductions are primarily related to taxable losses for which the tax benefit has been reserved.