Equity (Tables)

9 Months Ended

Sep. 30, 2019

Equity [Abstract]

Share activity

Activity in the number of shares of common stock and treasury stock was as follows (in millions):

	Nine Months Ended September 30,
	2019			2018
	Common Stock	Treasury Stock		Common Stock	Treasury Stock
Balance as of beginning of period	673	(256	)	673	(240	)
Transactions in connection with stock-based compensation plans	—	—		—	(1	)
Stock purchases under purchase programs	—	(7	)	—	(8	)
Balance as of end of period	673	(263	)	673	(249	)

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 September 30,
	2019												2018
	Foreign Currency Translation Adjustment			Defined Benefit Plans Items			Gains (Losses) on Cash Flow Hedges			Total			Foreign Currency Translation Adjustment			Defined Benefit Plans Items			Total
Balance as of beginning of period	$	(870	)	$	(481	)	$	1		$	(1,350	)	$	(751	)	$	(511	)	$	(1,262	)
Other comprehensive income (loss) before reclassifications	(180		)	—			1			(179		)	20			—			20
Amounts reclassified from accumulated other comprehensive income (loss)	—			2			(2		)	—			—			7			7
Other comprehensive income (loss)	(180		)	2			(1		)	(179		)	20			7			27
Balance as of end of period	$	(1,050	)	$	(479	)	$	—		$	(1,529	)	$	(731	)	$	(504	)	$	(1,235	)

	Nine Months Ended September 30,
	2019												2018
	Foreign Currency Translation Adjustment			Defined Benefit Plans Items			Gains (Losses) 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	(28		)	—			2			(26		)	(224		)	—			(224		)
Amounts reclassified from accumulated other comprehensive income (loss)	—			6			(2		)	4			—			20			20
Other comprehensive income (loss)	(28		)	6			—			(22		)	(224		)	20			(204		)
Reclassification of stranded income tax effects of Tax Reform to retained earnings	—			—			—			—			—			(91		)	(91		)
Balance as of end of period	$	(1,050	)	$	(479	)	$	—		$	(1,529	)	$	(731	)	$	(504	)	$	(1,235	)