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Reserve for Property and Casualty Insurance Claims and Claims Expense (Tables)
 9 Months Ended
Sep. 30, 2020
Reserve for Property-Liability Insurance Claims and Claims Expense [Abstract]  
Schedule of liability for unpaid claims and claims adjustment expense
Prior year reserve reestimates included in claims and claims expense (1)




Nine months ended September 30,


Non-catastrophe losses

Catastrophe losses

Total
($ in millions)

2020

2019

2020

2019

2020

2019
Auto

$
(60
)

$
(302
)

$
(41
)

$
(9
)

$
(101
)

$
(311
)
Homeowners

(19
)

—


(421
)

59


(440
)

59

Other personal lines

(25
)

13


(41
)

4


(66
)

17

Commercial lines

28


18


1


(1
)

29


17

Discontinued Lines and Coverages (2)

139


103


—


—


139


103

Service Businesses

(1
)

(3
)

—


—


(1
)

(3
)
Total prior year reserve reestimates

$
62


$
(171
)

$
(502
)

$
53


$
(440
)

$
(118
)
(1) 
Favorable reserve reestimates are shown in parentheses.
(2) 
The Company’s 2020 annual reserve review, using established industry and actuarial practices, resulted in unfavorable reestimates of $132 million.
Rollforward of the reserve for property and casualty insurance claims and claims expense
 
 
Nine months ended September 30,
($ in millions)
 
2020
 
2019
Balance as of January 1
 
$
27,712

 
$
27,423

Less recoverables (1)
 
(6,912
)
 
(7,155
)
Net balance as of January 1
 
20,800

 
20,268

Incurred claims and claims expense related to:
 
 
 
 
Current year
 
17,075

 
18,345

Prior years
 
(440
)
 
(118
)
Total incurred
 
16,635

 
18,227

Claims and claims expense paid related to:
 
 
 
 
Current year
 
(9,623
)
 
(10,640
)
Prior years
 
(6,714
)
 
(6,872
)
Total paid
 
(16,337
)
 
(17,512
)
Net balance as of September 30
 
21,098

 
20,983

Plus recoverables
 
6,889

 
7,093

Balance as of September 30
 
$
27,987

 
$
28,076


(1) 
Recoverables comprises reinsurance and indemnification recoverables.