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Employee Benefit Plan - Additional Information (Detail) - CAD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Mar. 30, 2019
Employees Benefit [Abstract]
Individual contributions under defined contribution pension plan	2.00%	5.00%
Total expense under the defined contribution plan	$ 6	$ 13

X

- Definition

The amount of post-employment benefit expense relating to defined contribution plans. Defined contribution plans are post-employment benefit plans under which an entity pays fixed contributions into a separate entity (a fund) and will have no legal or constructive obligation to pay further contributions if the fund does not hold sufficient assets to pay all employee benefits relating to employee service in the current and prior periods.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 19
-IssueDate 2020-01-01
-Paragraph 53
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=19&code=ifrs-tx-2020-en-r&anchor=para_53&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_PostemploymentBenefitExpenseDefinedContributionPlans
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Defined contribution plans percentage

+ References

No definition available.

+ Details

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Namespace Prefix:	pds_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Employees Benefit [abstract]

+ References

No definition available.

+ Details

Name:	pds_EmployeesBenefitAbstract
Namespace Prefix:	pds_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration