CONSOLIDATED STATEMENTS OF EARNINGS AND COMPREHENSIVE INCOME (PARENTHETICAL) (USD $) In Millions, unless otherwise specified	12 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009
Other comprehensive (loss)/income, pension and postretirement activity, tax	$ (25.6)	$ (19.8)	$ (45.9)
Other comprehensive (loss)/income, deferred gain on hedging activity, tax	$ 5.3	$ (6.9)	$ 0.9

Tax effects of the increase (decrease) to accumulated comprehensive income during the period related to benefit plans. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label.

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Total tax effect of the change in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. The change includes an entity's share of an equity investee's increase or decrease in deferred hedging gains or losses. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label.

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