Commitments and Contingencies (Tables)

6 Months Ended

Mar. 31, 2018

Commitments and Contingencies Disclosure [Abstract]

Changes in warranty liability

Changes in the Company’s warranty liability during the three and six months ended March 31, 2018 and 2017 were as follows:

	Three Months Ended   March 31,						Six Months Ended   March 31,
	2018			2017			2018			2017
	(In millions)
Warranty liability, beginning of period	$	149.4		$	107.8		$	143.7		$	104.4
Warranties issued	19.3			15.1			35.8			28.3
Changes in liability for pre-existing warranties	13.7			3.9			20.5			6.3
Settlements made	(19.8		)	(14.0		)	(37.4		)	(26.2		)
Warranty liability, end of period	$	162.6		$	112.8		$	162.6		$	112.8

Changes in legal claims reserves

Changes in the Company’s legal claims reserves during the six months ended March 31, 2018 and 2017 were as follows:

	Six Months Ended   March 31,
	2018			2017
	(In millions)
Reserves for legal claims, beginning of period	$	420.6		$	423.5
Increase in reserves	41.4			56.2
Payments	(18.4		)	(38.2		)
Reserves for legal claims, end of period	$	443.6		$	441.5