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INCOME TAXES - Tax Effects of Temporary Differences Representing Deferred Tax Assets/Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Deferred tax assets:    
Accrued liabilities $ 56.4 $ 53.5
U.S. state NOL carryforwards 18.9 30.8
Operating lease liabilities 71.1 79.5
Other 2.5 2.8
Deferred tax assets 148.9 166.6
Less: valuation allowance on deferred tax assets 10.2 24.2
Net deferred tax assets 138.7 142.4
Deferred tax liabilities:    
Goodwill and intangible franchise rights 171.2 152.2
Depreciation expense 110.0 99.4
Interest rate swaps 26.1 0.6
Operating lease ROU assets 59.6 63.5
Other 1.7 1.7
Deferred tax liabilities 368.6 317.4
Net deferred tax liability $ 229.9 $ 175.0