Stockholders' Equity (Details 1) (USD $) In Millions	Jun. 30, 2011
Estimated amount of share-based compensation expense
2011	$ 13.3
2012	15.9
2013	7.6
2014	0.6
Total	37.4
2011 Three-year PSU Awards [Member]
Estimated amount of share-based compensation expense
2011	1.8
2012	3.6
2013	3.6
2014	0
Total	9.0
2010 Three-year PSU Awards [Member]
Estimated amount of share-based compensation expense
2011	2.3
2012	4.5
2013	0
2014	0
Total	6.8
2009 Three-year PSU Awards [Member]
Estimated amount of share-based compensation expense
2011	3.8
2012	0
2013	0
2014	0
Total	3.8
SLO Awards [Member]
Estimated amount of share-based compensation expense
2011	0.6
2012	0.3
2013	0
2014	0
Total	0.9
Other long-term share-based incentive compensation programs [Member]
Estimated amount of share-based compensation expense
2011	4.8
2012	7.5
2013	4.0
2014	0.6
Total	$ 16.9