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Schedule II: Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2024
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
Schedule II: Valuation and Qualifying Accounts
Schedule II: Valuation and Qualifying Accounts
Changes in valuation and qualifying accounts consisted of the following (in millions):
Beginning
of Year		AdditionsDeductionsEnd
of Year
2024
Allowance for credit losses$161 127 (127)$161 
Deferred tax valuation allowance$2,191 179 (327)$2,043 
2023
Allowance for credit losses$123 152 (114)$161 
Deferred tax valuation allowance$1,849 429 (87)$2,191 
2022
Allowance for credit losses (a)
$54 165 (96)$123 
Deferred tax valuation allowance (b)
$305 1,617 (73)$1,849 
(a) Increase in the allowance for credit losses is related to the acquisition of WM in 2022.
(b) Additions to the deferred tax valuation allowance include $343 million related to the acquisition of WM in 2022.