Stockholders' Equity (Tables)

12 Months Ended

Sep. 30, 2023

Equity [Abstract]

Components of Other Comprehensive Income

Changes in Accumulated other comprehensive income (loss) by component for fiscal years 2023 and 2022 were as follows: 

(In millions)	Unamortized benefit plan credits		Currency translation adjustments		Changes in fair value of cash flow hedges		Total
Balance as of September 30, 2021	$	16.8	$	(10.1)	$	0.8	$	7.5
Other comprehensive (loss) income before reclassification	—		(40.0)		15.4		(24.6)
(Gain) loss reclassified out of accumulated other comprehensive income	(2.2)		—		1.4		(0.8)
Tax benefit (expense)	0.5		0.4		(4.3)		(3.4)
Balance as of September 30, 2022	15.1		(49.7)		13.3		(21.3)
Other comprehensive (loss) income before reclassification	—		13.1		(22.8)		(9.7)
(Gain) loss reclassified out of accumulated other comprehensive income	(2.2)		30.7		12.7		41.2
Tax benefit (expense)	0.5		(0.1)		2.6		3.0
Balance as of September 30, 2023	$	13.4	$	(6.0)	$	5.8	$	13.2

Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income

Amounts reclassified from Accumulated other comprehensive income (loss) follow for the years ended September 30:

(in millions)	2023		2022		2021
Amortization of pension and other postretirement plan prior service credits (a)	$	(2.1)	$	(2.2)	$	(11.8)
Business disposal (b)	30.6		—		—
Loss (gain) on cash flow hedges (c)	12.7		1.4		(0.7)
Tax effect of reclassifications	3.0		(3.4)		2.1
Total amounts reclassified, net of tax	$	44.2	$	(4.2)	$	(10.4)

(a)Amortization of unrecognized prior service credits included in net periodic benefit income for pension and other postretirement plans was reported in Net pension and other postretirement plan (income) expense within the Consolidated Statements of Comprehensive Income. The Company releases the income tax effects from Accumulated other comprehensive income as benefit plan credits are amortized into earnings.

(b)Represents the realization of currency translation losses and unamortized pension prior service credits of $30.7 million and $0.1 million, respectively, recognized within Income from discontinued operations, net of tax within the Consolidated Statement of Comprehensive Income in connection with the sale of the Global Products business.

(c)Represents the realization of gains from cash flow hedges reported in Net interest and other financing expense within the Consolidated Statements of Comprehensive Income.