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Income Taxes - Reconciliations of Statutory U.S. Federal Income Tax Rates to Our Effective Tax Rate for Continuing Operations (Parenthetical) (Detail) $ in Millions | 12 Months Ended
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Dec. 31, 2021 USD ($)
Income Tax Disclosure [Abstract] |
Regulatory expenses related to resolution of state attorneys general litigation and investigations | $ 205.0
Regulatory expenses non deductible for income tax purposes | $ 50.7

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- Definition Regulatory expenses related to resolution of state attorneys general litigation and investigations. + References No definition available. + Details
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