Condensed Consolidated Statement of Comprehensive Income (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Comprehensive income
Net income	$ 206.0us-gaap_NetIncomeLoss	$ 180.3us-gaap_NetIncomeLoss	$ 420.2us-gaap_NetIncomeLoss	$ 378.4us-gaap_NetIncomeLoss
Other comprehensive income (loss), net of tax:
Pension and other postretirement benefit plan adjustments (net of tax expense of $9.2, $7.9, $18.4 and $15.7)	17.2	14.5	34.8	29.1
Currency translation adjustments	(67.7)	5.1	(160.6)	14.3
Net change in unrealized gains and losses on cash flow hedges (net of tax expense of $8.7, $0.4, $7.6 and $0.8)	25.7	(2.0)	33.1	(1.3)
Other comprehensive (loss) income	(24.8)	17.6	(92.7)	42.1
Comprehensive income	$ 181.2us-gaap_ComprehensiveIncomeNetOfTax	$ 197.9us-gaap_ComprehensiveIncomeNetOfTax	$ 327.5us-gaap_ComprehensiveIncomeNetOfTax	$ 420.5us-gaap_ComprehensiveIncomeNetOfTax

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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