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Reinsurance
 9 Months Ended
Sep. 30, 2018
Reinsurance Disclosures [Abstract]  
Reinsurance
Note 9
Reinsurance
Effects of reinsurance ceded on property and casualty premiums earned and life premiums and contract charges

($ in millions)
 
Three months ended September 30,
 
Nine months ended September 30,
 
2018
 
2017
 
2018

2017
Property and casualty insurance premiums earned
 
$
(260
)
 
$
(245
)
 
$
(756
)
 
$
(745
)
Life premiums and contract charges
 
(76
)
 
(75
)
 
(221
)
 
(225
)

Effects of reinsurance ceded on property and casualty insurance claims and claims expense, life contract benefits and interest credited to contractholder funds
($ in millions)
 
Three months ended September 30,
 
Nine months ended September 30,
 
2018
 
2017
 
2018
 
2017
Property and casualty insurance claims and claims expense (1)
 
$
(247
)
 
$
(1,268
)
 
$
(572
)
 
$
(1,523
)
Life contract benefits
 
(35
)
 
(47
)
 
(150
)
 
(164
)
Interest credited to contractholder funds
 
(5
)
 
(6
)
 
(16
)
 
(17
)

(1) 
Includes expected reinsurance recoveries on catastrophe losses related to homeowners flood claims covered by the National Flood Insurance Program.