Note 10. Stock Plans

Stock Options:

Stock option activity consisted of the following:


	Shares Subject to Option			Weighted-Average Exercise or Grant Price Per Share		Aggregate Intrinsic Value

Balance at January 1, 2015		56,431,551		$	24.19	$	685 million

Annual grant to eligible employees		8,899,530			36.94
Additional options issued		808,460			35.48

Total options granted		9,707,990			36.82
Options exercised		(2,598,094	)		23.16	$	35 million
Options cancelled		(632,703	)		31.37

Balance at March 31, 2015		62,908,744			26.11	$	635 million

Restricted and Deferred Stock:

Restricted and deferred stock activity consisted of the following:


	Number of Shares			Grant Date		Weighted-Average Fair Value Per Share		Weighted-Average Aggregate Fair Value

Balance at January 1, 2015		10,582,640				$	28.56

Performance share units granted		1,598,290			Feb. 18, 2015		36.94
Annual grant to eligible employees		1,253,550			Feb. 18, 2015		36.94
Additional shares issued		643,413			Various		36.71

Total shares granted		3,495,253					36.90	$	129 million
Vested		(3,234,075	)				36.95	$	119 million
Forfeited		(267,181	)				32.49

Balance at March 31, 2015		10,576,637					28.65

Share Repurchase Program:

During 2013, our Board of Directors authorized the repurchase of $7.7 billion of our Common Stock through December 31, 2016. Repurchases under the program are determined by management and are wholly discretionary. During the three months ended March 31, 2015, we repurchased 41.7 million shares of Common Stock at an average cost of $35.98 per share, or an aggregate cost of $1.5 billion, which was paid during the quarter. All share repurchases were funded through available cash and commercial paper issuances. As of March 31, 2015, we have $1.6 billion in remaining share repurchase capacity.