Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2013

Stock-Based Compensation

Summary of stock option activity

(in millions, except for weighted average exercise prices)	Number of Shares		Weighted-Average Exercise Price
Outstanding — December 31, 2012	3.7		$	21.06
Granted in GeoEye acquisition (Note 4)	1.4		17.69
Exercised	(2.1	)	19.39
Forfeited/Expired	(0.2	)	24.02
Outstanding — September 30, 2013	2.8		20.31
Exercisable — September 30, 2013	1.7		$	22.22

Summary of restricted stock activity

(in millions, except for weighted average grant date fair values)	Number of Shares		Weighted Average Grant Date Fair Value
Non-vested at December 31, 2012	0.6		$	17.52
Granted in GeoEye acquisition (Note 4)	0.5		27.97
Forfeited/Canceled	(0.1	)	24.00
Vested	(0.5	)	24.79
Non-vested at September 30, 2013	0.5		$	19.13

Summary of restricted stock unit activity

(in millions, except for weighted average grant date fair values)	Numberof Shares		Weighted- Average Grant Date Fair Value
Non-vested at December 31, 2012	0.1		$	32.92
Granted	0.8		30.72
Granted in GeoEye acquisition (Note 4)	0.3		27.97
Forfeited/Canceled	—		—
Vested	(0.4	)	28.04
Non-vested at September 30, 2013	0.8		$	28.11