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Leases - Summary of Components of Lease Expense (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Finance lease cost: |  |  |
Net lease cost | $ 122.0 | $ 130.5 | $ 117.4
Other Operating Income (Expense) |  |  |
Lessee Lease Description [Line Items] |  |  |
Operating lease cost | 89.0 | 93.1 | 86.4
Finance lease cost: |  |  |
Variable lease cost | 31.8 | 34.2 | 30.6
Short-term lease cost | 2.1 | 2.6 | 1.6
Depreciation And Amortization |  |  |
Finance lease cost: |  |  |
Amortization of lease assets | 1.7 | 1.7 | 1.6
Interest |  |  |
Finance lease cost: |  |  |
Interest of lease liabilities | 0.1 | 0.1 | 0.1
Information And Other |  |  |
Finance lease cost: |  |  |
Sublease income | $ (2.7) | $ (1.2) | $ (2.9)

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- Definition Amount of amortization expense attributable to right-of-use asset from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 4 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479041/842-20-45-4 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-4 + Details
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- Definition Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-4 + Details
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