Shareholders' Equity (Tables)

6 Months Ended

Jun. 30, 2015

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, 2014	$	16,298		$	16,267		$	31
Payments of dividends to shareholders	(306		)	(306		)	—
Stock plans	254			254			—
Other	(44		)	(42		)	(2		)
Comprehensive income (loss)	(487		)	(488		)	1
Balance at June 30, 2015	$	15,715		$	15,685		$	30

Millions of dollars	Total shareholders' equity			Company shareholders' equity			Noncontrolling interest in consolidated subsidiaries
Balance at December 31, 2013	$	13,615		$	13,581		$	34
Shares repurchased	(500		)	(500		)	—
Stock plans	357			357			—
Payments of dividends to shareholders	(254		)	(254		)	—
Other	(26		)	(22		)	(4		)
Comprehensive income	1,395			1,400			(5		)
Balance at June 30, 2014	$	14,587		$	14,562		$	25

Schedule of comprehensive income (loss)

Accumulated other comprehensive loss consisted of the following:

Millions of dollars	June 30, 2015			December 31, 2014
Defined benefit and other postretirement liability adjustments	$	(318	)	$	(326	)
Accumulated gain on cash flow hedges	106			—
Cumulative translation adjustments	(75		)	(70		)
Other	(11		)	(3		)
Total accumulated other comprehensive loss	$	(298	)	$	(399	)