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Significant Accounting Policies - Additional Information (Details) - CAD ($) $ in Millions | 12 Months Ended |
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Dec. 31, 2018 | Jan. 01, 2019
Disclosure Of Significant Accounting Policies [Line Items] |  |
Cash and cash equivalents orginal maturity | three months or less |
Events After Reporting Period [Member] |  |
Disclosure Of Significant Accounting Policies [Line Items] |  |
Lease liabilities |  | $ 60
Right-of-use assets |  | $ 70
Top of Range [Member] | Software [Member] |  |
Disclosure Of Significant Accounting Policies [Line Items] |  |
Expected useful life of intangible asset | 10 years |

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- Definition The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2019-01-01 -Name IFRS -Number 16 -IssueDate 2017-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=16&date=2017-03-01&anchor=para_47_b&doctype=Standard -URIDate 2017-03-09 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The amount of assets that represent a lessee's right to use an underlying asset for the lease term. Underlying asset is an asset that is the subject of a lease, for which the right to use that asset has been provided by a lessor to a lessee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2019-01-01 -Name IFRS -Number 16 -IssueDate 2017-01-01 -Paragraph 53 -Subparagraph j -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=16&date=2017-03-01&anchor=para_53_j&doctype=Standard -URIDate 2017-03-09 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Cash and cash equivalents original maturity. + References No definition available. + Details
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Namespace Prefix: | pds_
Data Type: | xbrli:stringItemType
Balance Type: | na
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- Definition Disclosure of significant accounting policies. + References No definition available. + Details
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Data Type: | xbrli:stringItemType
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- Definition Expected useful life of intangible asset. + References No definition available. + Details
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Namespace Prefix: | pds_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |