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SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS AND RESERVES
 12 Months Ended
Dec. 31, 2022
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS AND RESERVES
SCHEDULE II – VALUATION AND QUALIFYING ACCOUNTS AND RESERVES FOR THE YEARS ENDED DECEMBER 31, 2022, 2021 AND 2020
(in millions)
 
Balance at
Beginning
of Period		Charged to
Costs and
Expenses		Charged to
Other
Accounts		DeductionsBalance
at End
of Period
FOR THE YEAR ENDED DECEMBER 31, 2022
Allowance for doubtful accounts
$9 $3 $— $(1)(a)$11 
Tax valuation allowance
$132 $5 $(2)$(6)$129 
FOR THE YEAR ENDED DECEMBER 31, 2021
Allowance for doubtful accounts
$10 $1 $— $(2)(a)$9 
Tax valuation allowance$133 $11 $8 $(20)$132 
FOR THE YEAR ENDED DECEMBER 31, 2020
Allowance for doubtful accounts
$11 $1 $— $(2)(a)$10 
Tax valuation allowance$92 $39 $2 $— $133 
 
(a)Uncollectible accounts written off, net of recoveries.