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Contingencies (Tables)
12 Months Ended
Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]  
Activity related to self-insured property and casualty reserves
The following table summarizes the 2023 and 2022 activity related to our net self-insured property and casualty reserves as of December 31, 2023.

 Beginning BalanceExpensePaymentsEnding Balance
2023 Activity
$50 35 (37)$48 
2022 Activity$48 28 (26)$50