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Income Taxes - Attributes Available for Utilization (Detail) $ in Millions | 12 Months Ended
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Dec. 31, 2019 USD ($)
U.S. federal net operating losses |  |
Operating Loss Carryforwards [Line Items] |  |
Attribute amount | $ 5.6 |
Deferred Tax Asset Attributes, First Year of Expiration | Dec. 31, 2027 |
U.S. state net operating losses |  |
Operating Loss Carryforwards [Line Items] |  |
Attribute amount | $ 1,061.9 |
Deferred Tax Asset Attributes, First Year of Expiration | Dec. 31, 2021 |
U.S. federal tax credits |  |
Operating Loss Carryforwards [Line Items] |  |
Attribute amount | $ 1.3 |
Deferred Tax Asset Attributes, First Year of Expiration | Dec. 31, 2021 |
U.S. state tax credits |  |
Operating Loss Carryforwards [Line Items] |  |
Attribute amount | $ 1.1 |
Deferred Tax Asset Attributes, First Year of Expiration | Dec. 31, 2027 |
Foreign net operating losses(a) |  |
Operating Loss Carryforwards [Line Items] |  |
Attribute amount | $ 338.7 | [1]
Deferred Tax Asset Attributes, First Year of Expiration | Dec. 31, 2021 |
[1] | (a) Includes approximately $230.3 of net operating loss carryforwards in Luxembourg as of December 31, 2019.

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