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v3.19.3.a.u2

Quarterly Results - Additional Information (Detail) - USD ($) | 3 Months Ended
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Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018
DOJ Reserve |  |  |  |  |  |  |
Quarterly Financial Information [Line Items] |  |  |  |  |  |  |
Unfavorable pre-tax reduction |  | $ 11,000,000.0 |  | $ 31,900,000 | $ 48,000,000.0 | $ 9,500,000 | $ 13,000,000.0
Unfavorable after-tax reduction | $ 6,200,000 | $ 8,400,000 |  | $ 24,500,000 | $ 36,600,000 | $ 7,200,000 | $ 9,900,000
Tax reduction per diluted share | $ 0.07 | $ 0.09 |  | $ 0.26 | $ 0.39 | $ 0.08 | $ 0.11
Provision For Asset Impairment |  |  |  |  |  |  |
Quarterly Financial Information [Line Items] |  |  |  |  |  |  |
Unfavorable pre-tax reduction | $ 97,600,000 |  |  |  |  |  |
Unfavorable after-tax reduction | $ 74,600,000 |  |  |  |  |  |
Tax reduction per diluted share | $ 0.84 |  |  |  |  |  |
Provision for Intangible Asset Impairment |  |  |  |  |  |  |
Quarterly Financial Information [Line Items] |  |  |  |  |  |  |
Unfavorable pre-tax reduction |  |  |  | $ 49,300,000 |  |  |
Unfavorable after-tax reduction |  |  |  | $ 37,700,000 |  |  |
Tax reduction per diluted share |  |  |  | $ 0.41 |  |  |
ASU 2016-09 |  |  |  |  |  |  |
Quarterly Financial Information [Line Items] |  |  |  |  |  |  |
Favorable after tax impact | $ 1,700,000 | $ 509,000 | $ 10,900,000 |  |  |  | $ 1,600,000
Favorable after tax impact per share diluted | $ 0.02 | $ 0.01 | $ 0.12 |  |  |  | $ 0.02

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