Retirement Benefit Liabilities Retirement Benefit Liabilities - Detail Textuals (Details) (USD $)	3 Months Ended		9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Defined Benefit Plan Disclosure [Line Items]
Pension Settlement Loss	$ (36,000,000)	$ 0	$ (36,000,000)	$ 0
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension Settlement Loss	(36,000,000)	0	(38,000,000)	0
U.S. Plan - Lump Sum Actions [Member]
Defined Benefit Plan Disclosure [Line Items]
Lump sum distribution - maximum	0		0
Lump sum distribution - minimum	1,000		1,000
Canadian Pension Plan Settlement [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension Settlement Loss	(36,000,000)
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements – After-tax	$ 27,000,000