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Derivative Instruments and Hedging Activities - Summary of Pre-tax (Gains) Losses From Derivatives Not Designated in as Hedging Instruments (Detail) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2024 | Mar. 31, 2023
Net Revenues [Member] | Not Designated as Hedging Instrument [Member] |  |
Derivative [Line Items] |  |
Gain (Loss) on Derivative Instruments, Net, Pretax | $ (3,819) | $ (3,661)
Net Revenues [Member] | Not Designated as Hedging Instrument, Trading [Member] |  |
Derivative [Line Items] |  |
Gain (Loss) on Derivative Instruments, Net, Pretax | 0 | 0
Net Revenues [Member] | Not Designated as Hedging Instrument, Economic Hedge [Member] |  |
Derivative [Line Items] |  |
Gain (Loss) on Derivative Instruments, Net, Pretax | (13) | 6
Financial expenses [Member] | Not Designated as Hedging Instrument [Member] |  |
Derivative [Line Items] |  |
Gain (Loss) on Derivative Instruments, Net, Pretax | 250 | 260
Financial expenses [Member] | Not Designated as Hedging Instrument, Trading [Member] |  |
Derivative [Line Items] |  |
Gain (Loss) on Derivative Instruments, Net, Pretax | (10) | (13)
Financial expenses [Member] | Not Designated as Hedging Instrument, Economic Hedge [Member] |  |
Derivative [Line Items] |  |
Gain (Loss) on Derivative Instruments, Net, Pretax | $ 0 | $ 0

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