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Acquisitions and Dispositions - Parker Acquisition - Summary (Details) $ / shares in Units, $ in Thousands, shares in Millions |  |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Mar. 11, 2025 USD ($) $ / shares shares | Oct. 14, 2024 D $ / shares | Jun. 30, 2025 USD ($) | Sep. 30, 2025 USD ($)
Parker Acquisition |  |  |  |
Gain on bargain purchase |  |  |  | $ 116,499
Parker |  |  |  |
Parker Acquisition |  |  |  |
Cash paid for acquisitions of businesses | $ 600 |  |  |
Shares issued as consideration in acquisition | shares | 4.8 |  |  |
Date of Acquisition Agreement |  | Oct. 14, 2024 |  |
Effective Date of Acquisition | Mar. 11, 2025 |  |  |
Closing price | $ / shares | $ 37.5 | $ 77.52 |  |
Number of trading days | D |  | 15 |  |
Threshold minimum share price | $ / shares |  | $ 42.7 |  |
Total value of acquisition | $ 180,562 |  |  |
Fair value of the net assets acquired | 297,061 |  |  |
Gain on bargain purchase | $ 116,499 |  | $ 3,500 |
Reasons for provisional information | Certain data necessary to complete the purchase price allocation is not yet available, including final tax returns that provide the underlying tax basis of Parker’s assets and liabilities. |  |  |
Period following acquisition date for completion of purchase price allocation | 12 months |  |  |

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Name: | us-gaap_BusinessAcquisitionAxis=nbr_ParkerDrillingCompanyMember
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Data Type: | na
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