Equity and Other Comprehensive Income (Loss) (Tables)

6 Months Ended

Mar. 31, 2022

Equity [Abstract]

Schedule of Changes in Accumulated Other Comprehensive Loss, Net of Tax

The tables below summarize the changes in accumulated other comprehensive loss, net of tax, by component for the six months ended March 31, 2022 and March 31, 2021 (in millions):

	Deferred (Loss) Income on Cash Flow Hedges			Defined Benefit Pension and Postretirement Plans			Foreign Currency Items			Total (1)
Balance at September 30, 2021	$	(0.2	)	$	(536.5	)	$	(462.4	)	$	(999.1	)
Other comprehensive income before reclassifications		—			0.1			113.4			113.5
Amounts reclassified from accumulated other    comprehensive loss		—			5.4			—			5.4
Net current period other comprehensive income		—			5.5			113.4			118.9
Balance at March 31, 2022	$	(0.2	)	$	(531.0	)	$	(349.0	)	$	(880.2	)

(1) All amounts are net of tax and noncontrolling interests.

	Deferred (Loss) Income on Cash Flow Hedges			Defined Benefit Pension and Postretirement Plans			Foreign Currency Items			Total (1)
Balance at September 30, 2020	$	(5.6	)	$	(727.7	)	$	(586.6	)	$	(1,319.9	)
Other comprehensive (loss) income before    reclassifications		(0.1	)		—			109.5			109.4
Amounts reclassified from accumulated other    comprehensive loss		2.9			13.3			—			16.2
Net current period other comprehensive income		2.8			13.3			109.5			125.6
Balance at March 31, 2021	$	(2.8	)	$	(714.4	)	$	(477.1	)	$	(1,194.3	)

(1) All amounts are net of tax and noncontrolling interests.

Summary of Reclassification out of Accumulated Other Comprehensive Loss

The following table summarizes the reclassifications out of accumulated other comprehensive loss by component (in millions):

	Three Months Ended								Three Months Ended
	March 31, 2022								March 31, 2021
	Pre-tax			Tax		Net of Tax			Pre-tax			Tax		Net of Tax
Amortization of defined benefit pension and    postretirement items: (1)
Actuarial losses (2)	$	(1.9	)	$	0.5	$	(1.4	)	$	(7.4	)	$	1.7	$	(5.7	)
Prior service costs (2)		(1.9	)		0.5		(1.4	)		(1.3	)		0.3		(1.0	)
Subtotal defined benefit plans		(3.8	)		1.0		(2.8	)		(8.7	)		2.0		(6.7	)
Derivative Instruments: (1)
Interest rate swap hedge loss (3)		—			—		—			(1.9	)		0.5		(1.4	)
Total reclassifications for the period	$	(3.8	)	$	1.0	$	(2.8	)	$	(10.6	)	$	2.5	$	(8.1	)

(1) Amounts in parentheses indicate charges to earnings. Amounts pertaining to noncontrolling interests are excluded.

(2) Included in the computation of net periodic pension cost. See “Note 4. Retirement Plans” for additional details.

(3) These accumulated other comprehensive income components are included in Interest expense, net.

	Six Months Ended								Six Months Ended
	March 31, 2022								March 31, 2021
	Pre-tax			Tax		Net of Tax			Pre-tax			Tax		Net of Tax
Amortization of defined benefit pension and    postretirement items: (1)
Actuarial losses (2)	$	(3.5	)	$	0.9	$	(2.6	)	$	(14.8	)	$	3.6	$	(11.2	)
Prior service costs (2)		(3.8	)		1.0		(2.8	)		(2.8	)		0.7		(2.1	)
Subtotal defined benefit plans		(7.3	)		1.9		(5.4	)		(17.6	)		4.3		(13.3	)
Derivative Instruments: (1)
Interest rate swap hedge loss (3)		—			—		—			(3.9	)		1.0		(2.9	)
Total reclassifications for the period	$	(7.3	)	$	1.9	$	(5.4	)	$	(21.5	)	$	5.3	$	(16.2	)

(1) Amounts in parentheses indicate charges to earnings. Amounts pertaining to noncontrolling interests are excluded.

(2) Included in the computation of net periodic pension cost. See “Note 4. Retirement Plans” for additional details.

(3) These accumulated other comprehensive income components are included in Interest expense, net.