v3.19.3.a.u2
Stockholders' equity (Tables)
 12 Months Ended
Dec. 31, 2019
Equity [Abstract]  
Summary of activity under our stock repurchase program
Activity under our stock repurchase program, on a trade date basis, was as follows (in millions):
 
Years ended December 31,
 
2019
 
2018
 
2017
 
Shares*
 
Dollars
 
Shares*
 
Dollars
 
Shares
 
Dollars
First quarter
15.9

 
$
3,031

 
56.4

 
$
10,787

 
3.4

 
$
555

Second quarter
13.1

 
2,349

 
18.2

 
3,190

 
6.2

 
1,006

Third quarter
6.2

 
1,170

 
8.7

 
1,713

 
4.4

 
769

Fourth quarter
5.1

 
1,090

 
11.1

 
2,165

 
4.5

 
796

Total stock repurchases
40.2

 
$
7,640

 
94.5

 
$
17,855

 
18.5

 
$
3,126


* Total shares do not add due to rounding.
Components of accumulated other comprehensive income
The components of AOCI were as follows (in millions):
 
Foreign
currency
translation
 
Cash flow
hedges
 
Available-for-sale
securities
 
Other
 
AOCI
Balance as of December 31, 2016
$
(610
)
 
$
282

 
$
(138
)
 
$
(5
)
 
$
(471
)
Foreign currency translation adjustments
77

 
—

 
—

 
—

 
77

Unrealized gains (losses)
—

 
192

 
(46
)
 
—

 
146

Reclassification adjustments to income
—

 
(638
)
 
41

 
—

 
(597
)
Other gains
—

 
—

 
—

 
5

 
5

Income taxes
4

 
158

 
(1
)
 
—

 
161

Balance as of December 31, 2017
(529
)
 
(6
)
 
(144
)
 
—

 
(679
)
Cumulative effect of change in accounting principle, net of tax
—

 
—

 
(9
)
 
—

 
(9
)
Foreign currency translation adjustments
(141
)
 
—

 
—

 
—

 
(141
)
Unrealized gains (losses)
—

 
61

 
(556
)
 
—

 
(495
)
Reclassification adjustments to income
—

 
262

 
365

 
—

 
627

Other losses
—

 
—

 
—

 
(2
)
 
(2
)
Income taxes
—

 
(76
)
 
6

 
—

 
(70
)
Balance as of December 31, 2018
(670
)
 
241

 
(338
)
 
(2
)
 
(769
)
Foreign currency translation adjustments
(48
)
 
—

 
—

 
—

 
(48
)
Unrealized gains
—

 
127

 
424

 
—

 
551

Reclassification adjustments to income
—

 
(211
)
 
(56
)
 
—

 
(267
)
Other losses
—

 
—

 
—

 
(5
)
 
(5
)
Income taxes
—

 
18

 
(8
)
 
—

 
10

Balance as of December 31, 2019
$
(718
)
 
$
175

 
$
22

 
$
(7
)
 
$
(528
)
Reclassifications out of accumulated other comprehensive income
Reclassifications out of AOCI and into earnings were as follows (in millions):
 
 
Years ended December 31,
 
 
Components of AOCI
 
2019
 
2018
 
2017
 
Consolidated Statements of Income locations
Cash flow hedges:
 
 
 
 
 
 
 
 
Foreign currency contract gains (losses)
 
$
101

 
$
(21
)
 
$
65

 
Product sales
Cross-currency swap contract gains (losses)
 
110

 
(241
)
 
574

 
Interest and other income, net
Forward interest rate contract losses
 
—

 
—

 
(1
)
 
Interest expense, net
 
 
211

 
(262
)
 
638

 
Income before income taxes
 
 
(46
)
 
55

 
(226
)
 
Provision for income taxes
 
 
$
165

 
$
(207
)
 
$
412

 
Net income
Available-for-sale securities:
 
 
 
 
 
 
 
 
Net realized gains (losses)
 
$
56

 
$
(365
)
 
$
(41
)
 
Interest and other income, net
 
 
(14
)
 
3

 
(8
)
 
Provision for income taxes
 
 
$
42

 
$
(362
)
 
$
(49
)
 
Net income