Product Warranty Obligations

12 Months Ended

Sep. 30, 2011

Product Warranty Obligations [Abstract]

Product Warranty Obligations

8. Product Warranty Obligations

We record a liability for product warranty obligations at the time of sale to a customer based upon historical warranty experience. Most of our products are covered under a warranty period that runs for twelve months from either the date of sale or from installation to a customer. We also record a liability for specific warranty matters when they become known and reasonably estimable. Our product warranty obligations are included in other current liabilities in the Consolidated Balance Sheet.

Changes in product warranty obligations are (in millions):

	September 30,
	2011			2010
Balance at beginning of period	$	37.3		$	32.1
Warranties recorded at time of sale		38.2			41.0
Adjustments to pre-existing warranties		(3.9	)		(1.8	)
Settlements of warranty claims		(33.1	)		(34.0	)
Balance at end of period	$	38.5		$	37.3