Fair Value Hierarchy (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2011		Jun. 30, 2010
Estimate of Fair Value, Fair Value Disclosure
Fair value assets and liabilities measured on recurring and nonrecurring basis
Cash equivalents, fair value disclosure	$ 1,183.0		$ 1,264.7
Short-term marketable securities, fair value disclosure	14.2		12.5
Long-term investments, fair value disclosure	11.8		15.0
Foreign currency derivatives, fair value disclosure			0.3	[1]
Assets, fair value disclosure, recurring	1,209.0		1,292.5
Fair value of assets measured on a recurring basis, percentage of total assets	9.82799%		11.04267%
Mandatorily redeemable noncontrolling interests, fair value disclosure	27.0	[2]	61.8	[2]
Fair Value, Inputs, Level 1
Fair value assets and liabilities measured on recurring and nonrecurring basis
Cash equivalents, fair value disclosure	1,183.0		1,264.7
Short-term marketable securities, fair value disclosure	14.2		12.5
Long-term investments, fair value disclosure	1.4		1.2
Foreign currency derivatives, fair value disclosure			0	[1]
Assets, fair value disclosure, recurring	1,198.6		1,278.4
Fair value of assets measured on a recurring basis, percentage of total assets	9.74345%		10.9222%
Mandatorily redeemable noncontrolling interests, fair value disclosure	0	[2]	0	[2]
Fair Value, Inputs, Level 2
Fair value assets and liabilities measured on recurring and nonrecurring basis
Cash equivalents, fair value disclosure	0		0
Short-term marketable securities, fair value disclosure	0		0
Long-term investments, fair value disclosure	10.4		13.8
Foreign currency derivatives, fair value disclosure			0	[1]
Assets, fair value disclosure, recurring	10.4		13.8
Fair value of assets measured on a recurring basis, percentage of total assets	0.08454%		0.1179%
Mandatorily redeemable noncontrolling interests, fair value disclosure	0	[2]	0	[2]
Fair Value, Inputs, Level 3
Fair value assets and liabilities measured on recurring and nonrecurring basis
Cash equivalents, fair value disclosure	0		0
Short-term marketable securities, fair value disclosure	0		0
Long-term investments, fair value disclosure	0		0
Foreign currency derivatives, fair value disclosure			0.3	[1]
Assets, fair value disclosure, recurring	0		0.3
Fair value of assets measured on a recurring basis, percentage of total assets	0.00%		0.00256%
Mandatorily redeemable noncontrolling interests, fair value disclosure	$ 27.0	[2]	$ 61.8	[2]

[1] Fair value is derived from changes in market value of obligations denominated in foreign currency based on an internal valuation model.

[2] Relates to unconditional obligations to purchase additional noncontrolling equity shares of consolidated subsidiaries. Fair value measurement of the obligation was based upon the amount payable as if the forward contracts were settled. The amount redeemable within the next twelve months is classified in accrued liabilities; any interests redeemable thereafter are classified in other non-current liabilities.