Share-Based Compensation (Total Share-Based Compensation Expense By Type Of Award) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Mar. 31, 2012		Mar. 31, 2011		Mar. 31, 2012		Mar. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation	$ 21.6	[1]	$ 18.0	[1]	$ 63.1	[1]	$ 60.4	[1]
Tax benefit	7.8		6.5		22.9		22.0
Restricted Share And Share Unit Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation	14.0		12.1		41.0		39.3
Employee Stock Option Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation	5.8		5.5		18.3		20.1
Performance Share Unit Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation	1.6		0		4.2		0
Stock Appreciation Right (Income)/Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation	$ 0.2		$ 0.4		$ (0.4)		$ 1.0

[1] The tax benefit related to share-based compensation expense was $7.8 million and $6.5 million for the three months ended March 31, 2012 and 2011, respectively, and $22.9 million and $22.0 million for the nine months ended March 31, 2012 and 2011, respectively.