Employee Benefit Plans - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Sep. 30, 2021	Sep. 30, 2020
Defined Benefit Plan Disclosure [Line Items]
Prior service cost included in accumulated other comprehensive loss	$ 1.9		$ 1.9
Prior service cost included in accumulated other comprehensive loss, net of tax	1.4		1.4
Unrecognized net actuarial losses included in accumulated other comprehensive loss	2.4		2.4
Unrecognized net actuarial losses included in accumulated other comprehensive loss, net of tax	1.8		$ 1.8
Settlement charge of defined benefit plan related to salaried participants	33.6
Multi-Employer Pension Plans
Maximum Percent of Total Plan Contributions Contributed to Multi-employer Plan			5.00%
Multiemployer plan period contributions	0.3		$ 1.2	$ 1.4	$ 1.5
401(k) plans
Amounts expensed (income recognized) for matching and discretionary contributions		$ 11.8	50.2	45.5	39.5
Supplemental Executive Retirement Plans
Defined Benefit Plan Disclosure [Line Items]
Trust held assets	$ 13.8		13.8
Defined contribution SERP expense		$ 0.4		$ 2.6	$ 1.6
Defined contribution SERP income			$ 0.5
Minimum
401(k) plans
Percentage contribution by employees for defined contribution 401(k) plans, low end of range (as a percent)			2.00%
Employer contribution			2.00%
Maximum
401(k) plans
Percentage contribution by employees for defined contribution 401(k) plans, low end of range (as a percent)			100.00%
Employer contribution			6.00%