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The number of other equity instruments (ie other than share options) granted in a share-based payment arrangement.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2019-01-01
-Paragraph 47
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_47_b&doctype=Standard
-URIDate 2019-03-27

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 2
-IssueDate 2019-01-01
-Paragraph 45
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_45&doctype=Standard
-URIDate 2019-03-27

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Data Type:	xbrli:decimalItemType
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Period Type:	duration

The number of other equity instruments (ie other than share options) outstanding in a share-based payment arrangement.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 2
-IssueDate 2019-01-01
-Paragraph 45
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_45&doctype=Standard
-URIDate 2019-03-27

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Period Type:	instant

The number of other equity instruments (ie other than share options) forfeited and expired in a share-based payment arrangement.

No definition available.

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Balance Type:	na
Period Type:	duration

The number of other equity instruments (ie other than share options) redeemed for cash in a share-based payment arrangement.

No definition available.

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Period Type:	duration

The percentage of share price receivable at the time of vesting of share units.

No definition available.

Name:	su_PercentageOfSharePriceEntitleToReceiveAtTimeOfVesting
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

The fourth incremental percentage of share price receivable by the executives at the time of vesting of share units.

No definition available.

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Period Type:	instant

The first incremental percentage of share price receivable by the executives at the time of vesting of share units.

No definition available.

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Namespace Prefix:	su_
Data Type:	num:percentItemType
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Period Type:	instant

The third incremental percentage of share price receivable by the executives at the time of vesting of share units.

No definition available.

Name:	su_PercentageOfSharePriceEntitleToReceiveAtTimeOfVestingIncrementsThree
Namespace Prefix:	su_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The second incremental percentage of share price receivable by the executives at the time of vesting of share units.

No definition available.

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Namespace Prefix:	su_
Data Type:	num:percentItemType
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Period Type:	instant

The vesting life of awards in a share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

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