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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2020
Commitments and Contingencies.  
Changes to Gross Insurance Liabilities

    

2020(a)

    

2019

Balance as of January 1

$

575

$

567

Self-insurance expense

 

172

 

171

Cash paid and other

(151)

(163)

Other (b)

68

Balance as of December 31

$

664

$

575

Current portion as of December 31

$

175

$

145

Long-term portion as of December 31

$

489

$

430

(a)Based on current estimates, we anticipate that most of our insurance reserves will be settled in cash over the next six years.
(b)Insurance reserves of $68 million related to the acquisition of Advanced Disposal.