Retirement Benefits (Narrative) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended		12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Sep. 30, 2013
Defined Benefit Plan Disclosure [Line Items]
Cash contributions to funded pension plans and benefit payments under unfunded pension plans	$ 64.7	$ 258.6	$ 300.8
Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Total expected contributions for current fiscal year	80.0
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Total expected contributions for current fiscal year	$ 100.0