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Reinsurance (Tables)
 6 Months Ended
Jun. 30, 2019
Reinsurance Disclosures [Abstract]  
Effects of reinsurance on premiums and contract charges
The effects of reinsurance on premiums and contract charges are as follows:
($ in millions)
Three months ended June 30,
 
Six months ended June 30,
 
2019
 
2018
 
2019
 
2018
Direct
$
185

 
$
184

 
$
368

 
$
369

Assumed
 
 
 
 
 
 
 
Affiliate
58

 
61

 
116

 
121

Non-affiliate
175

 
185

 
352

 
374

Ceded
 
 
 
 
 
 
 
Affiliate
(13
)
 
(12
)
 
(25
)
 
(25
)
Non-affiliate
(65
)
 
(70
)
 
(124
)
 
(138
)
Premiums and contract charges, net of reinsurance
$
340

 
$
348

 
$
687

 
$
701
Effects of reinsurance on contract benefits
The effects of reinsurance on contract benefits are as follows:
($ in millions)
Three months ended June 30,
 
Six months ended June 30,
 
2019
 
2018
 
2019
 
2018
Direct
$
211

 
$
266

 
$
461

 
$
523

Assumed
 
 
 
 
 
 
 
Affiliate
30

 
34

 
62

 
68

Non-affiliate
134

 
123

 
250

 
257

Ceded
 
 
 
 
 
 
 
Affiliate
(10
)
 
(8
)
 
(19
)
 
(20
)
Non-affiliate
10

 
(58
)
 
(16
)
 
(101
)
Contract benefits, net of reinsurance
$
375

 
$
357

 
$
738

 
$
727
Effects of reinsurance on interest credited to contractholder funds
The effects of reinsurance on interest credited to contractholder funds are as follows:
($ in millions)
Three months ended June 30,
 
Six months ended June 30,
 
2019
 
2018
 
2019
 
2018
Direct
$
117

 
$
129

 
$
230

 
$
259

Assumed
 
 
 
 
 
 
 
Affiliate
2

 
2

 
4

 
4

Non-affiliate
34

 
33

 
75

 
58

Ceded
 
 
 
 
 
 
 
Affiliate
(5
)
 
(5
)
 
(10
)
 
(10
)
Non-affiliate
(5
)
 
(7
)
 
(8
)
 
(11
)
Interest credited to contractholder funds, net of reinsurance
$
143

 
$
152

 
$
291

 
$
300