Shareholders' Equity (Tables)

3 Months Ended

Mar. 31, 2019

Stockholders' Equity Note [Abstract]

Summary of shareholders' equity activity

The following tables summarize our shareholders’ equity activity for the three months ended March 31, 2019 and March 31, 2018, respectively:

Millions of dollars	Common Shares		Paid-in Capital in Excess of Par Value		Treasury Stock			Retained Earnings			Accumulated Other Comprehensive Income (Loss)			Noncontrolling Interest in Consolidated Subsidiaries			Total
Balance at December 31, 2018	$	2,671	$	211	$	(6,744	)	$	13,739		$	(355	)	$	22		$	9,544
Comprehensive income (loss):
Net income	—		—		—			152			—			—			152
Other comprehensive income	—		—		—			—			1			—			1
Cash dividends ($0.18 per share)	—		—		—			(157		)	—			—			(157		)
Stock plans	—		13		74			—			—			—			87
Other	—		—		—			—			—			(2		)	(2		)
Balance at March 31, 2019	$	2,671	$	224	$	(6,670	)	$	13,734		$	(354	)	$	20		$	9,625

Millions of dollars	Common Shares			Paid-in Capital in Excess of Par Value		Treasury Stock			Retained Earnings			Accumulated Other Comprehensive Income (Loss)			Noncontrolling Interest in Consolidated Subsidiaries			Total
Balance at December 31, 2017	$	2,673		$	207	$	(6,757	)	$	12,668		$	(469	)	$	27		$	8,349
Comprehensive income (loss):
Net Income	—			—		—			46			—			1			47
Other comprehensive income	—			—		—			—			(2		)	—			(2		)
Cash dividends ($0.18 per share)	—			—		—			(158		)	—			—			(158		)
Stock plans	(1		)	15		113			—			—			—			127
Other	—			—		—			30			—			(2		)	28
Balance at March 31, 2018	$	2,672		$	222	$	(6,644	)	$	12,586		$	(471	)	$	26		$	8,391

Schedule of comprehensive income (loss)

Accumulated other comprehensive loss consisted of the following:

Millions of dollars	March 31, 2019			December 31, 2018
Defined benefit and other postretirement liability adjustments	$	(203	)	$	(203	)
Cumulative translation adjustments	(82		)	(82		)
Other	(69		)	(70		)
Total accumulated other comprehensive loss	$	(354	)	$	(355	)