Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2011

Stock-Based Compensation [Abstract]

Stock-Based Compensation

	Three Months				Six Months
	2011		2010		2011		2010
Stock option expense	$	6.2	$	6.0	$	11.8	$	10.3
Restricted stock and unit awards expense		16.9		8.6		29.4		12.7
Total stock-based compensation expense	$	23.1	$	14.6	$	41.2	$	23.0