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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% |  |

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- Definition The amounts in accumulated other comprehensive income related to gains and losses that are not recognized immediately and are expected to be recognized as components of the net periodic benefit cost over the next fiscal year that follows the most recent annual statement of the financial position presented, net of tax. + References No definition available. + Details
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- Definition The amounts in accumulated other comprehensive income related to the prior service cost or credit expected to be recognized as components of net periodic benefit cost over the next fiscal year that follows the most recent annual statement of the financial position presented, net of tax. + References No definition available. + Details
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- Definition Defined contribution SERP expense. + References No definition available. + Details
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- Definition Maximum percent of plan contributions contributed to multi-employer plan. + References No definition available. + Details
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- Definition The total amount of cash and securities held by third party trustees pursuant to terms of debt instruments or other agreements as of the date of each statement of financial position presented, which can be used by the trustee only to pay the noncurrent portion of specified obligations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(b)) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
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- Definition Amount included in accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan expected to be recognized in net periodic benefit (cost) credit for fiscal year following most recent annual statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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- Definition Amount included in accumulated other comprehensive (income) loss for prior service cost (credit) expected to be recognized in net periodic benefit cost (credit) for fiscal year following most recent annual statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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- Definition Amount of payment, which decreases plan assets of defined benefit plan, for irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Transaction constituting settlement includes, but is not limited to, making lump-sum cash payment to participant in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contract. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(8) -URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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- Definition Amount of cost for employer contribution to multiemployer plan. Multiemployer plan includes, but is not limited to, pension plan determined to be individually significant and insignificant and other postretirement benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 55 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=35742348&loc=SL14450788-114948 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 35 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=29639808&loc=d3e29008-114946 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 11 -URI https://asc.fasb.org/extlink&oid=65877416&loc=SL14450702-114947 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 9 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=65877416&loc=SL14450691-114947 + Details
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