Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2018

Stockholders' Equity Attributable to Parent [Abstract]

Schedule of Stock Repurchases

The following table summarizes our stock repurchases under the above-described programs (in millions, except per share data):

	Year ended December 31,
	2018 (1)		2017 (1)		2016 (2)
Shares repurchased and retired	40		13		123
Amount	$	2,900	$	954	$	11,001
Average price per share	$	72.95	$	71.79	$	89.15
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Notes:
(1)	All repurchases were under the 2016 Program.
(2)	Includes 36 million shares repurchased for $3.0 billion under the 2016 Program and 87 million shares repurchased for $8.0 billion under the 2015 Program.

Reduction to common stock and APIC as a result of stock repurchases

The following table summarizes the reduction of common stock and APIC and the charge to retained earnings as a result of our stock repurchases (in millions):

	Year ended December 31,
	2018		2017		2016
Reduction of common stock and APIC	$	112	$	34	$	302
Charge to retained earnings	2,940		$	1,028	$	10,883

Schedule of Dividends Declared

The following table summarizes cash dividends declared on our common stock (in millions, except per share data):

	2018				2017
	Dividend Per Share		Amount		Dividend Per Share		Amount
First quarter	$	0.57	$	752	$	0.52	$	685
Second quarter	0.57		747		0.52		685
Third quarter	0.57		746		0.52		685
Fourth quarter	0.57		741		0.52		687
Total	$	2.28	$	2,986	$	2.08	$	2,742

Schedule of accumulated OCI by component

The following table summarizes the changes in AOCI by component, net of tax (in millions):

	Foreign Currency Translation			Unrealized Gains and Losses on Available-for-Sale Securities			Unrealized Gains and Losses on Cash Flow Hedges			Total
Balance at December 31, 2016	$	132		$	(16	)	$	162		$	278
Other comprehensive income (loss) before reclassifications	(47		)	218			(304		)	(133		)
Amounts reclassified from accumulated other comprehensive income	—			(8		)	28			20
Net current period other comprehensive income (loss)	(47		)	210			(276		)	(113		)
Balance at December 31, 2017	$	85		$	194		$	(114	)	$	165
Reclassifications to retained earnings as a result of the adoption of new accounting standards	—			(293		)	—			(293		)
Balance at January 1, 2018	$	85		$	(99	)	$	(114	)	$	(128	)
Net unrealized gain (loss)	(38		)	43			112			117
Reclassifications to net income	—			4			87			91
Net current period other comprehensive income (loss)	(38		)	47			199			208
Balance at December 31, 2018	$	47		$	(52	)	$	85		$	80