Shareowners Equity (Tables)

12 Months Ended

Sep. 30, 2011

Shareowners' Equity [Abstract]

Changes in outstanding common shares

	2011			2010			2009
Beginning balance		141.7			142.1			143.2
Treasury stock purchases		(4.0	)		(2.2	)		(1.7	)
Shares delivered under incentive plans		4.2			1.8			0.6
Ending balance		141.9			141.7			142.1

Accumulated other comprehensive loss

	September 30,
	2011			2010
Unrecognized pension and postretirement benefit plan liabilities (Note 12)	$	(1,033.6	)	$	(854.9	)
Accumulated currency translation adjustments		35.5			12.1
Net unrealized gains on cash flow hedges		5.2			1.3
Unrealized gains on investment securities		—			0.3
Accumulated other comprehensive loss	$	(992.9	)	$	(841.2	)