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Subsidiaries (Tables) | 12 Months Ended
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Dec. 31, 2017
Disclosure Of Significant Investments In Subsidiaries [Abstract] |
Summary of Subsidiaries |
|  |  |  | Ownership Interest |
|  | Country of Incorporation |  | 2017 |  |  | 2016 |
Precision Limited Partnership |  | Canada |  |  | 100 |  |  |  | 100 |
Precision Drilling Canada Limited Partnership |  | Canada |  |  | 100 |  |  |  | 100 |
Precision Diversified Oilfield Services Corp. |  | Canada |  |  | 100 |  |  |  | 100 |
Precision Directional Services Ltd. |  | Canada |  |  | 100 |  |  |  | 100 |
Precision Drilling (US) Corporation |  | United States |  |  | 100 |  |  |  | 100 |
Precision Drilling Company LP |  | United States |  |  | 100 |  |  |  | 100 |
Precision Completion & Production Services Ltd. |  | United States |  |  | 100 |  |  |  | 100 |
Precision Directional Services, Inc. |  | United States |  |  | 100 |  |  |  | 100 |
Grey Wolf Drilling Limited |  | Barbados |  |  | 100 |  |  |  | 100 |
Grey Wolf Drilling (Barbados) Ltd. |  | Barbados |  |  | 100 |  |  |  | 100 |

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- Definition The disclosure of subsidiaries. [Refer: Subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2016-01-13 -Paragraph 17 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2016-03-30&anchor=para_17_b&doctype=Standard -URIDate 2016-03-31 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2016-01-13 -Paragraph 16 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2016-03-30&anchor=para_16_b&doctype=Standard -URIDate 2016-03-31 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2016-01-13 -Paragraph B4 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2016-03-30&anchor=para_B4_a&doctype=Appendix&seq=2 -URIDate 2016-03-31 + Details
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