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Summary of Significant Accounting Policies Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - Fair Value, Measurements, Recurring - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Derivative assets $ 282.5 $ 289.6
Derivative liabilities (141.7) (7.9)
Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Derivative assets 200.5 209.8
Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis    
Derivative assets 82.0 79.8
Derivative liabilities $ (141.7) $ (7.9)