Product Warranty Obligations

6 Months Ended

Mar. 31, 2019

Product Warranties Disclosures [Abstract]

Product Warranty Obligations

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 installation. We also record a liability for specific warranty matters when they become probable and reasonably estimable.

Changes in product warranty obligations are (in millions):

	Six Months Ended March 31,
	2019			2018
Balance at beginning of period	$	27.9		$	28.5
Accruals for warranties issued during the current period	11.0			12.9
Adjustments to pre-existing warranties	(4.3		)	2.7
Settlements of warranty claims	(9.3		)	(11.9		)
Balance at end of period	$	25.3		$	32.2