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Accumulated Other Comprehensive Income (Loss)
 12 Months Ended
Dec. 31, 2022
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Accumulated Other Comprehensive Income (Loss)

20. Accumulated Other Comprehensive Income (Loss)

Changes in accumulated other comprehensive income (loss) by component were as follows (in millions):

 

 

Employee Pension and
Postretirement
Benefits, Net of Tax

 

 

Cumulative
Translation
Adjustments

 

 

Derivative Instruments,
Net of Tax

 

 

Accumulated Other
Comprehensive
Income (Loss)

 

Balance at September 30, 2019

 

$

(69.4

)

 

$

(132.5

)

 

$

0.3

 

 

$

(201.6

)

Other comprehensive income (loss) before reclassifications

 

 

(29.3

)

 

 

30.4

 

 

 

(0.5

)

 

 

0.6

 

Amounts reclassified from accumulated other comprehensive income (loss)

 

 

2.8

 

 

 

—

 

 

 

(0.2

)

 

 

2.6

 

Net current period other comprehensive income (loss)

 

 

(26.5

)

 

 

30.4

 

 

 

(0.7

)

 

 

3.2

 

Balance at September 30, 2020

 

 

(95.9

)

 

 

(102.1

)

 

 

(0.4

)

 

 

(198.4

)

Other comprehensive income (loss) before reclassifications

 

 

57.1

 

 

 

3.8

 

 

 

1.5

 

 

 

62.4

 

Amounts reclassified from accumulated other comprehensive income (loss)

 

 

4.6

 

 

 

—

 

 

 

0.4

 

 

 

5.0

 

Net current period other comprehensive income (loss)

 

 

61.7

 

 

 

3.8

 

 

 

1.9

 

 

 

67.4

 

Balance at September 30, 2021

 

 

(34.2

)

 

 

(98.3

)

 

 

1.5

 

 

 

(131.0

)

Other comprehensive income (loss) before reclassifications

 

 

8.2

 

 

 

(6.9

)

 

 

0.9

 

 

 

2.2

 

Amounts reclassified from accumulated other comprehensive income (loss)

 

 

0.4

 

 

 

—

 

 

 

(0.2

)

 

 

0.2

 

Net current period other comprehensive income (loss)

 

 

8.6

 

 

 

(6.9

)

 

 

0.7

 

 

 

2.4

 

Balance at December 31, 2021

 

 

(25.6

)

 

 

(105.2

)

 

 

2.2

 

 

 

(128.6

)

Other comprehensive income (loss) before reclassifications

 

 

29.3

 

 

 

(31.0

)

 

 

6.2

 

 

 

4.5

 

Amounts reclassified from accumulated other comprehensive income (loss)

 

 

27.4

 

 

 

4.6

 

 

 

(0.2

)

 

 

31.8

 

Net current period other comprehensive income (loss)

 

 

56.7

 

 

 

(26.4

)

 

 

6.0

 

 

 

36.3

 

Balance at December 31, 2022

 

$

31.1

 

 

$

(131.6

)

 

$

8.2

 

 

$

(92.3

)

 

Reclassifications out of accumulated other comprehensive income (loss) included in the computation of net periodic pension and postretirement benefit cost (See Note 5 of the Notes to Consolidated Financial Statements for additional details regarding employee benefit plans) were as follows (in millions):

 

 

Classification of

 

Year Ended
December 31,

 

 

Three Months Ended
December 31,
(transition period)

 

 

Year Ended
September 30,

 

 

 

income (expense)

 

2022

 

 

2021

 

 

2021

 

 

2020

 

Amortization of employee pension and postretirement benefits items

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Prior service costs

 

Miscellaneous, net

 

$

0.8

 

 

$

0.2

 

 

$

0.9

 

 

$

0.7

 

Settlement

 

Miscellaneous, net

 

 

33.6

 

 

 

—

 

 

 

—

 

 

 

—

 

Actuarial (gains) losses

 

Miscellaneous, net

 

 

1.3

 

 

 

0.3

 

 

 

5.2

 

 

 

3.1

 

Total before tax

 

 

 

 

35.7

 

 

 

0.5

 

 

 

6.1

 

 

 

3.8

 

Tax benefit

 

 

 

 

(8.3

)

 

 

(0.1

)

 

 

(1.5

)

 

 

(1.0

)

Net of tax

 

 

 

$

27.4

 

 

$

0.4

 

 

$

4.6

 

 

$

2.8