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Accrued Workers' Compensation Cost - (Tables)
6 Months Ended
Jun. 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 six months ended June 30, 2020 and 2019:
 
Three Months Ended
June 30,
 
Six Months Ended
June 30,
(in millions)
2020
2019
 
2020
2019
Total accrued costs, beginning of period
$
217

$
236

 
$
214

$
238

Incurred
 
 
 
 
 
Current year
13

16

 
33

35

Prior years
(6
)
(11
)
 
(9
)
(16
)
Total incurred
7

5

 
24

19

Paid
 
 
 
 
 
Current year
(2
)
(2
)
 
(3
)
(3
)
Prior years
(11
)
(15
)
 
(24
)
(30
)
Total paid
(13
)
(17
)
 
(27
)
(33
)
Total accrued costs, end of period
$
211

$
224

 
$
211

$
224

The following summarizes workers' compensation liabilities on the condensed consolidated balance sheets:
(in millions)
June 30, 2020
December 31, 2019
Total accrued costs, end of period
$
211

$
214

Collateral paid to carriers and offset against accrued costs
(8
)
(9
)
Total accrued costs, net of carrier collateral offset
$
203

$
205

Payable in less than 1 year
(net of collateral paid to carriers of
$2 and $3 at June 30, 2020 and December 31, 2019, respectively.)
$
62

$
61

Payable in more than 1 year
(net of collateral paid to carriers of
$6 at June 30, 2020 and December 31, 2019.)
141

144

Total accrued costs, net of carrier collateral offset
$
203

$
205