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Revenue - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Sep. 30, 2021 | Jun. 30, 2021
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items] |  |
Net revenue recognized from performance obligations | $ 8 |
Remaining performance obligations | 4,153 |
Allowance for credit losses | $ 93 |
Rig Technologies [Member] |  |
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items] |  |
Net revenue recognized from performance obligations |  | $ 74

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