Equity (Tables)

3 Months Ended

Mar. 31, 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 March 31,
	2019									2018
	Foreign Currency Translation Adjustment			Defined Benefit Plans Items			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 before reclassifications	153			—			153			42			—			42
Amounts reclassified from accumulated other comprehensive loss	—			2			2			—			6			6
Other comprehensive income	153			2			155			42			6			48
Reclassification of stranded income tax effects of Tax Reform to retained earnings	—			—			—			—			(91		)	(91		)
Balance as of end of period	$	(869	)	$	(483	)	$	(1,352	)	$	(465	)	$	(518	)	$	(983	)