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Legal Proceedings, Commitments and Contingencies (Detail) $ in Millions |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Apr. 24, 2009 USD ($) | Jun. 30, 2006 subsidiary | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | May 31, 2017 lawsuit
Loss Contingencies [Line Items] |  |  |  |  |
Damages sought by plaintiff |  |  | $ 52 |  |
Liabilities recorded relative to environmental matters |  |  | 742 | $ 789 |
Environmental costs eligible for future recovery |  |  | $ 645 | 685 |
Time period environmental costs and recovery of environmental costs are projected over |  |  | 20 years |  |
Outstanding letters of credit, surety bonds, and third-party guarantees |  |  | $ 3,600 | 3,400 |
Third-party guarantees outstanding |  |  | $ 838 | $ 871 |
Percentage of total guarantees that relate to guarantees of contractual performance of joint ventures |  |  | 69.00% | 71.00% |
N.Y. Metropolitan Transportation Authority |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Damages sought by plaintiff | $ 190 |  |  |  |
Contract value | 323 |  |  |  |
Contract payments received to date | 241 |  |  |  |
Claims for monetary damages against the plaintiff | $ 95 |  |  |  |
Sikorsky Aircraft Corporation |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Number of pending lawsuits | lawsuit |  |  |  |  | 2
Number of entities involved in litigation | subsidiary |  | 2 |  |  |

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