Shareholders' Equity (Tables)
 9 Months Ended
Sep. 30, 2017
Stockholders' Equity Note [Abstract]  
Summary of shareholders' equity activity
The following tables summarize our shareholders’ equity activity:
Millions of dollars
Total shareholders' equity
Company shareholders' equity
Noncontrolling interest in consolidated subsidiaries
Balance at December 31, 2016
$
9,448

$
9,409

$
39

Retained earnings adjustment for new accounting standard (a)
(384
)
(384
)
—

Payments of dividends to shareholders
(469
)
(469
)
—

Stock plans
340

340

—

Other
(52
)
(46
)
(6
)
Comprehensive income (loss)
363

367

(4
)
Balance at September 30, 2017
$
9,246

$
9,217

$
29

(a) Represents a cumulative-effect adjustment to retained earnings upon our adoption of a new accounting standards update on the income tax consequences of intra-entity transfers of assets other than inventory which was effective January 1, 2017. See Note 8 for further information.
Millions of dollars
Total shareholders' equity
Company shareholders' equity
Noncontrolling interest in consolidated subsidiaries
Balance at December 31, 2015
$
15,495

$
15,462

$
33

Payments of dividends to shareholders
(465
)
(465
)
—

Stock plans
348

348

—

Other
(39
)
(52
)
13

Comprehensive loss
(5,613
)
(5,611
)
(2
)
Balance at September 30, 2016
$
9,726

$
9,682

$
44
Schedule of comprehensive income (loss)
Accumulated other comprehensive loss consisted of the following:
Millions of dollars
September 30,
2017
December 31,
2016
Defined benefit and other postretirement liability adjustments
$
(313
)
$
(313
)
Cumulative translation adjustments
(78
)
(80
)
Other
(57
)
(61
)
Total accumulated other comprehensive loss
$
(448
)
$
(454
)