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Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2022
Accounting Policies [Abstract]  
Summary of Changes in Allowance for Credit Losses

The following table presents the changes in our allowance for credit losses for the periods presented:

 

 

 

December 31,

 

 

 

2022

 

 

2021

 

 

2020

 

 

 

(in millions)

 

Allowance for credit losses:

 

 

 

 

 

 

 

 

 

Balance, beginning of period

 

$

28

 

 

$

33

 

 

$

25

 

Provision charged to expense

 

 

6

 

 

 

3

 

 

 

17

 

Write-offs, net of recoveries and other
   adjustments

 

 

(6

)

 

 

(8

)

 

 

(9

)

Balance, end of period

 

$

28

 

 

$

28

 

 

$

33