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Contingencies (Tables)
12 Months Ended
Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]  
Activity related to self-insured property and casualty reserves
The following table summarizes the 2021 and 2020 activity related to our net self-insured property and casualty reserves as of December 31, 2021.

 Beginning Balance
Habit Acquisition(a)
ExpensePaymentsEnding Balance
2021 Activity$50 — 23 (25)$48 
2020 Activity$54 13 (23)$50