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Revenue Recognition - Summarize Activity of the Net Product Revenue Allowance and Reserve Categories (Detail) - USD ($) $ in Thousands | 9 Months Ended
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Sep. 30, 2023 | Sep. 30, 2022
Valuation And Qualifying Accounts Disclosure [Line Items] |  |
Beginning balance | $ 191,521 | $ 282,197
Provision related to current period sales | 613,701 | 584,945
Provision related to prior period sales | (15,257) | 1,167
Credits/payments made for current period sales | (485,808) | (406,425)
Credits/payments made for prior period sales | (119,913) | (263,543)
Ending balance | 184,244 | 198,341
Trade Allowances |  |
Valuation And Qualifying Accounts Disclosure [Line Items] |  |
Beginning balance | 44,626 | 86,636
Provision related to current period sales | 67,003 | 71,164
Credits/payments made for current period sales | (30,450) | (26,746)
Credits/payments made for prior period sales | (42,389) | (83,398)
Ending balance | 38,790 | 47,656
Rebates, Chargebacks and Discounts |  |
Valuation And Qualifying Accounts Disclosure [Line Items] |  |
Beginning balance | 136,093 | 184,726
Provision related to current period sales | 531,700 | 490,995
Provision related to prior period sales | (15,113) | 1,167
Credits/payments made for current period sales | (442,673) | (360,256)
Credits/payments made for prior period sales | (75,297) | (176,107)
Ending balance | 134,710 | 140,525
Product Returns |  |
Valuation And Qualifying Accounts Disclosure [Line Items] |  |
Beginning balance | 8,746 | 8,090
Provision related to current period sales | 1,634 | 1,738
Provision related to prior period sales | (250) |
Credits/payments made for current period sales | (953) |
Credits/payments made for prior period sales | (1,219) | (1,408)
Ending balance | 7,958 | 8,420
Other Incentives |  |
Valuation And Qualifying Accounts Disclosure [Line Items] |  |
Beginning balance | 2,056 | 2,745
Provision related to current period sales | 13,364 | 21,048
Provision related to prior period sales | 106 |
Credits/payments made for current period sales | (11,732) | (19,423)
Credits/payments made for prior period sales | (1,008) | (2,630)
Ending balance | $ 2,786 | $ 1,740

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