Equity (Tables)

6 Months Ended

Jun. 30, 2019

Equity [Abstract]

Schedule of changes in accumulated other comprehensive loss

Changes in accumulated other comprehensive loss by component, net of tax, were as follows (in millions):

	Three Months Ended June 30,
	2019											2018
	Foreign Currency Translation Adjustment			Defined Benefit Plans Items			Gains on Cash Flow Hedges		Total			Foreign Currency Translation Adjustment			Defined Benefit Plans Items			Total
Balance as of beginning of period	$	(869	)	$	(483	)	$	—	$	(1,352	)	$	(465	)	$	(518	)	$	(983	)
Other comprehensive income (loss) before reclassifications	(1		)	—			1		—			(286		)	—			(286		)
Amounts reclassified from accumulated other comprehensive loss	—			2			—		2			—			7			7
Other comprehensive income (loss)	(1		)	2			1		2			(286		)	7			(279		)
Balance as of end of period	$	(870	)	$	(481	)	$	1	$	(1,350	)	$	(751	)	$	(511	)	$	(1,262	)

	Six Months Ended June 30,
	2019											2018
	Foreign Currency Translation Adjustment			Defined Benefit Plans Items			Gains on Cash Flow Hedges		Total			Foreign Currency Translation Adjustment			Defined Benefit Plans Items			Total
Balance as of beginning of period	$	(1,022	)	$	(485	)	$	—	$	(1,507	)	$	(507	)	$	(433	)	$	(940	)
Other comprehensive income (loss) before reclassifications	152			—			1		153			(244		)	—			(244		)
Amounts reclassified from accumulated other comprehensive loss	—			4			—		4			—			13			13
Other comprehensive income (loss)	152			4			1		157			(244		)	13			(231		)
Reclassification of stranded income tax effects of Tax Reform to retained earnings	—			—			—		—			—			(91		)	(91		)
Balance as of end of period	$	(870	)	$	(481	)	$	1	$	(1,350	)	$	(751	)	$	(511	)	$	(1,262	)