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Shareholders' Equity And Dividend Restrictions (Tables)
 12 Months Ended
Dec. 31, 2016
Shareholders Equity And Dividend Restrictions [Abstract]  
Change In AOCI Includes Changes In Unrealized Gains And Losses On Investments And Pension Obligations
The changes from the beginning of year to the end of year are the result of changes to other comprehensive income or loss (OCI).
 (Dollars in millions)
 
2016
 
 
2015
 
 
2014
 
 
Before
tax
 
Income
tax
 
Net
 
 
Before
tax
 
Income
tax
 
Net
 
 
Before
tax
 
Income
tax
 
Net
Investments:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
AOCI, January 1
 
$
2,094

 
$
722

 
$
1,372

 
 
$
2,719

 
$
942

 
$
1,777

 
 
$
2,335

 
$
808

 
$
1,527

OCI before realized gains recognized in net income
 
653

 
229

 
424

 
 
(556
)
 
(196
)
 
(360
)
 
 
514

 
181

 
333

Realized gains recognized in net income
 
(122
)
 
(43
)
 
(79
)
 
 
(69
)
 
(24
)
 
(45
)
 
 
(130
)
 
(47
)
 
(83
)
OCI
 
531

 
186

 
345

 
 
(625
)
 
(220
)
 
(405
)
 
 
384

 
134

 
250

AOCI, December 31
 
$
2,625

 
$
908

 
$
1,717

 
 
$
2,094

 
$
722

 
$
1,372

 
 
$
2,719

 
$
942

 
$
1,777

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Pension obligations:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
AOCI, January 1
 
$
(42
)
 
$
(14
)
 
$
(28
)
 
 
$
(36
)
 
$
(12
)
 
$
(24
)
 
 
$
(18
)
 
$
(6
)
 
$
(12
)
OCI excluding amortization recognized in net income
 
13

 
5

 
8

 
 
(12
)
 
(5
)
 
(7
)
 
 
(21
)
 
(7
)
 
(14
)
Amortization recognized in net income
 
3

 
1

 
2

 
 
6

 
3

 
3

 
 
3

 
1

 
2

OCI
 
16

 
6

 
10

 
 
(6
)
 
(2
)
 
(4
)
 
 
(18
)
 
(6
)
 
(12
)
AOCI, December 31
 
$
(26
)
 
$
(8
)
 
$
(18
)
 
 
$
(42
)
 
$
(14
)
 
$
(28
)
 
 
$
(36
)
 
$
(12
)
 
$
(24
)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Life deferred acquisition costs, life policy reserves and other:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
AOCI, January 1
 
$
1

 
$
1

 
$
—

 
 
$
(12
)
 
$
(3
)
 
$
(9
)
 
 
$
(16
)
 
$
(5
)
 
$
(11
)
OCI before realized gains recognized in net income
 
(8
)
 
(3
)
 
(5
)
 
 
14

 
5

 
9

 
 
7

 
3

 
4

Realized gains recognized in net income
 
(2
)
 
(1
)
 
(1
)
 
 
(1
)
 
(1
)
 
—

 
 
(3
)
 
(1
)
 
(2
)
OCI
 
(10
)
 
(4
)
 
(6
)
 
 
13

 
4

 
9

 
 
4

 
2

 
2

AOCI, December 31
 
$
(9
)
 
$
(3
)
 
$
(6
)
 
 
$
1

 
$
1

 
$
—

 
 
$
(12
)
 
$
(3
)
 
$
(9
)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Summary of AOCI:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
AOCI, January 1
 
$
2,053

 
$
709

 
$
1,344

 
 
$
2,671

 
$
927

 
$
1,744

 
 
$
2,301

 
$
797

 
$
1,504

Investments OCI
 
531

 
186

 
345

 
 
(625
)
 
(220
)
 
(405
)
 
 
384

 
134

 
250

Pension obligations OCI
 
16

 
6

 
10

 
 
(6
)
 
(2
)
 
(4
)
 
 
(18
)
 
(6
)
 
(12
)
Life deferred acquisition costs, life policy reserves and other OCI
 
(10
)
 
(4
)
 
(6
)
 
 
13

 
4

 
9

 
 
4

 
2

 
2

Total OCI
 
537

 
188

 
349

 
 
(618
)
 
(218
)
 
(400
)
 
 
370

 
130

 
240

AOCI, December 31
 
$
2,590

 
$
897

 
$
1,693

 
 
$
2,053

 
$
709

 
$
1,344

 
 
$
2,671

 
$
927

 
$
1,744