Consolidated Statements Of Comprehensive Income (Loss) (Parenthetical) (USD $) In Millions	12 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2009
Consolidated Statements Of Comprehensive Income (Loss)
Pension and post-retirement benefits, tax	$ (71.5)	$ 23.5	$ 110.3
Net gain (loss) on derivative instruments, tax	(3.1)	(9.2)	3.7
Unrealized gain (loss) on marketable securities, tax	$ (0.1)	$ 0.3	$ 0

Tax effects of the net changes to accumulated comprehensive income during the period related to benefit plans.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph c(3)

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 25

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Tax effect on the change in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's increase (decrease) in deferred hedging gains or losses.

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- Definition

Tax effect on gross appreciation or the gross loss in value of the total of unsold securities during the period being reported on.

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