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Accumulated Other Comprehensive (Loss) Income
 9 Months Ended
Sep. 30, 2019
Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Comprehensive Income (Loss) Note Accumulated Other Comprehensive (Loss) Income
The following table presents changes, net of tax, in each component of accumulated other comprehensive (loss) income.
 
Three months ended September 30,
($ in millions)
Unrealized (losses) gains on investment securities (a)
 
Translation adjustments and net investment hedges (b)
 
Cash flow hedges (b)
 
Defined benefit pension plans
 
Accumulated other comprehensive (loss) income
Balance at July 1, 2018
$
(598
)
 
$
19

 
$
28

 
$
(97
)
 
$
(648
)
Net change
(133
)
 
—

 
—

 
—

 
(133
)
Balance at September 30, 2018
$
(731
)
 
$
19

 
$
28

 
$
(97
)
 
$
(781
)
Balance at July 1, 2019
$
133

 
$
19

 
$
28

 
$
(96
)
 
$
84

Net change
105

 
—

 
1

 
—

 
106

Balance at September 30, 2019
$
238

 
$
19

 
$
29

 
$
(96
)
 
$
190

 
Nine months ended September 30,
($ in millions)
Unrealized (losses) gains on investment securities (a)
 
Translation adjustments and net investment hedges (b)
 
Cash flow hedges (b)
 
Defined benefit pension plans
 
Accumulated other comprehensive (loss) income
Balance at December 31, 2017
$
(173
)
 
$
16

 
$
11

 
$
(89
)
 
$
(235
)
Cumulative effect of changes in accounting principles, net of tax
 
 
 
 
 
 
 
 
 
Adoption of Accounting Standards Update 2016-01
27

 
—

 
—

 
—

 
27

Adoption of Accounting Standards Update 2018-02
(40
)
 
4

 
—

 
(6
)
 
(42
)
Balance at January 1, 2018
(186
)
 
20

 
11

 
(95
)
 
(250
)
Net change
(545
)
 
(1
)
 
17

 
(2
)
 
(531
)
Balance at September 30, 2018
$
(731
)
 
$
19

 
$
28

 
$
(97
)
 
$
(781
)
Balance at December 31, 2018
$
(481
)
 
$
18

 
$
19

 
$
(95
)
 
$
(539
)
Cumulative effect of changes in accounting principles, net of tax (c)
 
 
 
 
 
 
 
 
 
Adoption of Accounting Standards Update 2017-08
8

 
—

 
—

 
—

 
8

Balance at January 1, 2019
(473
)
 
18

 
19

 
(95
)
 
(531
)
Net change
711

 
1

 
10

 
(1
)
 
721

Balance at September 30, 2019
$
238

 
$
19

 
$
29

 
$
(96
)
 
$
190


(a)
Represents the after-tax difference between the fair value and amortized cost of our available-for-sale securities portfolio.
(b)
For additional information on derivative instruments and hedging activities, refer to Note 17.
(c)
Refer to the section titled Recently Adopted Accounting Standards in Note 1 for additional information.
The following tables present the before- and after-tax changes in each component of accumulated other comprehensive income (loss).
Three months ended September 30, 2019 ($ in millions)
Before tax
 
Tax effect
 
After tax
Investment securities
 
 
 
 
 
Net unrealized gains arising during the period
$
165

 
$
(39
)
 
$
126

Less: Net realized gains reclassified to income from continuing operations
27

(a)
(6
)
(b)
21

Net change
138

 
(33
)
 
105

Translation adjustments
 
 
 
 
 
Net unrealized losses arising during the period
(2
)
 
1

 
(1
)
Net investment hedges (c)
 
 
 
 
 
Net unrealized gains arising during the period
2

 
(1
)
 
1

Cash flow hedges (c)
 
 
 
 
 
Net unrealized gains arising during the period
5

 
(1
)
 
4

Less: Net realized gains reclassified to income from continuing operations
3

 
—

 
3

Net change
2

 
(1
)
 
1

Other comprehensive income
$
140

 
$
(34
)
 
$
106

(a)
Includes gains reclassified to other gain on investments, net in our Condensed Consolidated Statement of Comprehensive Income.
(b)
Includes amounts reclassified to income tax expense from continuing operations in our Condensed Consolidated Statement of Comprehensive Income.
(c)
For additional information on derivative instruments and hedging activities, refer to Note 17.
Three months ended September 30, 2018 ($ in millions)
Before tax
 
Tax effect
 
After tax
Investment securities
 
 
 
 
 
Net unrealized losses arising during the period
$
(174
)
 
$
41

 
$
(133
)
Less: Net realized gains reclassified to income from continuing operations
1

(a)
(1
)
(b)
—

Net change
(175
)
 
42

 
(133
)
Translation adjustments
 
 
 
 
 
Net unrealized gains arising during the period
2

 
(1
)
 
1

Net investment hedges (c)
 
 
 
 
 
Net unrealized losses arising during the period
(2
)
 
1

 
(1
)
Cash flow hedges (c)
 
 
 
 
 
Net unrealized losses arising during the period
(1
)
 
1

 
—

Other comprehensive loss
$
(176
)
 
$
43

 
$
(133
)
(a)
Includes gains reclassified to other gain on investments, net in our Condensed Consolidated Statement of Comprehensive Income.
(b)
Includes amounts reclassified to income tax expense from continuing operations in our Condensed Consolidated Statement of Comprehensive Income.
(c)
For additional information on derivative instruments and hedging activities, refer to Note 17.
Nine months ended September 30, 2019 ($ in millions)
Before tax
 
Tax effect
 
After tax
Investment securities
 
 
 
 
 
Net unrealized gains arising during the period
$
990

 
$
(233
)
 
$
757

Less: Net realized gains reclassified to income from continuing operations
60

(a)
(14
)
(b)
46

Net change
930

 
(219
)
 
711

Translation adjustments
 
 
 
 
 
Net unrealized gains arising during the period
4

 
(1
)
 
3

Net investment hedges (c)
 
 
 
 
 
Net unrealized losses arising during the period
(3
)
 
1

 
(2
)
Cash flow hedges (c)
 
 
 
 
 
Net unrealized gains arising during the period
26

 
(6
)
 
20

Less: Net realized gains reclassified to income from continuing operations
12

 
(2
)
 
10

Net change
14

 
(4
)
 
10

Defined benefit pension plans
 
 
 
 
 
Net unrealized losses arising during the period
(1
)
 
—

 
(1
)
Other comprehensive income
$
944

 
$
(223
)
 
$
721

(a)
Includes gains reclassified to other gain on investments, net in our Condensed Consolidated Statement of Comprehensive Income.
(b)
Includes amounts reclassified to income tax expense from continuing operations in our Condensed Consolidated Statement of Comprehensive Income.
(c)
For additional information on derivative instruments and hedging activities, refer to Note 17.
Nine months ended September 30, 2018 ($ in millions)
Before tax
 
Tax effect
 
After tax
Investment securities
 
 
 
 
 
Net unrealized losses arising during the period
$
(705
)
 
$
166

 
$
(539
)
Less: Net realized gains reclassified to income from continuing operations
8

(a)
(2
)
(b)
6

Net change
(713
)
 
168

 
(545
)
Translation adjustments
 
 
 
 
 
Net unrealized losses arising during the period
(6
)
 
1

 
(5
)
Net investment hedges (c)
 
 
 
 
 
Net unrealized gains arising during the period
5

 
(1
)
 
4

Cash flow hedges (c)
 
 
 
 
 
Net unrealized gains arising during the period
22

 
(5
)
 
17

Defined benefit pension plans
 
 
 
 
 
Net unrealized losses arising during the period
(2
)
 
—

 
(2
)
Other comprehensive loss
$
(694
)
 
$
163

 
$
(531
)
(a)
Includes gains reclassified to other gain on investments, net in our Condensed Consolidated Statement of Comprehensive Income.
(b)
Includes amounts reclassified to income tax expense from continuing operations in our Condensed Consolidated Statement of Comprehensive Income.
(c)
For additional information on derivative instruments and hedging activities, refer to Note 17.