Earnings Per Share and Share Repurchases (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2012	Mar. 31, 2011
Earnings Per Share [Abstract]
Income from continuing operations	$ 38	$ 19
Income (loss) from discontinued operations, net of tax	(9)	(6)
Net income applicable to common shares	29	13
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Weighted average outstanding shares of common stock	158.2	159.2
Dilutive effect of employee stock options and restricted stock	4.1	2.5
Common stock and common stock equivalents	162.3	161.7
Earnings Per Share, Basic [Abstract]
Basic earnings (loss) per share from continuing operations	$ 0.24	$ 0.12
Basic earnings (loss) per share from discontinued operations	$ (0.06)	$ (0.04)
Net earnings (loss) per share (Basic)	$ 0.18	$ 0.08
Earnings Per Share, Diluted [Abstract]
Diluted earnings (loss) per share from continuing oeprations	$ 0.23	$ 0.12
Diluted earnings (loss) per share from discontinued operations	$ (0.05)	$ (0.04)
Net earnings (loss) per share (Diluted)	$ 0.18	$ 0.08
Shares repurchased
Stock Repurchased and Retired During Period, Shares	0	1.8
Stock Repurchased and Retired During Period, Value	$ 0	$ 35

Gain (loss) after tax expense or benefit, not previously recognized and resulting from the sale of a business component, which is recognized at the date of sale. A gain (loss) reflects the amount by which the consideration received exceeds (is exceeded by) the net carrying amount (reflecting previous provisions for loss on disposal, if any) of the disposal group.

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