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Accrued Workers' Compensation Cost - (Tables)
9 Months Ended
Sep. 30, 2020
Insurance [Abstract]  
Summary of Activities in Liability for Unpaid Claims and Claims Adjustment Expenses
The following table summarizes the accrued workers’ compensation cost activity for the three and nine months ended September 30, 2020 and 2019:
Three Months Ended
September 30,
Nine Months Ended
September 30,
(in millions)2020201920202019
Total accrued costs, beginning of period$211 $224 $214 $238 
Incurred
Current year15 19 48 54 
Prior years(3)(6)(12)(22)
Total incurred12 13 36 32 
Paid
Current year(2)(5)(5)(8)
Prior years(11)(11)(35)(41)
Total paid(13)(16)(40)(49)
Total accrued costs, end of period$210 $221 $210 $221 
The following summarizes workers' compensation liabilities on the condensed consolidated balance sheets:
(in millions)September 30, 2020December 31, 2019
Total accrued costs, end of period$210 $214 
Collateral paid to carriers and offset against accrued costs(8)(9)
Total accrued costs, net of carrier collateral offset$202 $205 
Payable in less than 1 year
(net of collateral paid to carriers of
$3 at September 30, 2020 and December 31, 2019)
$60 $61 
Payable in more than 1 year
(net of collateral paid to carriers of
$5 and $6 at September 30, 2020 and December 31, 2019, respectively)
142 144 
Total accrued costs, net of carrier collateral offset$202 $205