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Accumulated Other Comprehensive Income (Tables)
 3 Months Ended
Mar. 31, 2017
Accumulated Other Comprehensive Income [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(Dollars in millions)
Three months ended March 31,
 
2017
 
 
2016
 
Before tax
 
Income tax
 
Net
 
 
Before tax
 
Income tax
 
Net
Investments:
 
 
 
 
 
 
 
 
 
 
 
 
AOCI, beginning of period
$
2,625

 
$
908

 
$
1,717

 
 
$
2,094

 
$
722

 
$
1,372

OCI before realized gains recognized in net income
290

 
102

 
188

 
 
351

 
121

 
230

Realized gains recognized in net income
(159
)
 
(56
)
 
(103
)
 
 
(61
)
 
(21
)
 
(40
)
OCI
131

 
46

 
85

 
 
290

 
100

 
190

AOCI, end of period
$
2,756

 
$
954

 
$
1,802

 
 
$
2,384

 
$
822

 
$
1,562

 
 
 
 
 
 
 
 
 
 
 
 
 
Pension obligations:
 
 
 
 
 
 
 
 
 
 
 
 
AOCI, beginning of period
$
(26
)
 
$
(8
)
 
$
(18
)
 
 
$
(42
)
 
$
(14
)
 
$
(28
)
OCI excluding amortization recognized in net income
—

 
—

 
—

 
 
—

 
—

 
—

Amortization recognized in net income
1

 
—

 
1

 
 
1

 
1

 
—

OCI
1

 
—

 
1

 
 
1

 
1

 
—

AOCI, end of period
$
(25
)
 
$
(8
)
 
$
(17
)
 
 
$
(41
)
 
$
(13
)
 
$
(28
)
 
 
 
 
 
 
 
 
 
 
 
 
 
Life deferred acquisition costs, life policy reserves and other:
 
 
 
 
 
 
 
 
 
 
 
 
AOCI, beginning of period
$
(9
)
 
$
(3
)
 
$
(6
)
 
 
$
1

 
$
1

 
$
—

OCI before realized gains recognized in net income
3

 
2

 
1

 
 
(4
)
 
(1
)
 
(3
)
Realized gains recognized in net income
(1
)
 
(1
)
 
—

 
 
—

 
—

 
—

OCI
2

 
1

 
1

 
 
(4
)
 
(1
)
 
(3
)
AOCI, end of period
$
(7
)
 
$
(2
)
 
$
(5
)
 
 
$
(3
)
 
$
—

 
$
(3
)
 
 
 
 
 
 
 
 
 
 
 
 
 
Summary of AOCI:
 
 
 
 
 
 
 
 
 
 
 
 
AOCI, beginning of period
$
2,590

 
$
897

 
$
1,693

 
 
$
2,053

 
$
709

 
$
1,344

Investments OCI
131

 
46

 
85

 
 
290

 
100

 
190

Pension obligations OCI
1

 
—

 
1

 
 
1

 
1

 
—

Life deferred acquisition costs, life policy reserves and other OCI
2

 
1

 
1

 
 
(4
)
 
(1
)
 
(3
)
Total OCI
134

 
47

 
87

 
 
287

 
100

 
187

AOCI, end of period
$
2,724

 
$
944

 
$
1,780

 
 
$
2,340

 
$
809

 
$
1,531