Inventory (Narrative) (Details) - ILS (₪) ₪ in Millions	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Classes of current inventories [abstract]
Impairment	₪ 6	₪ 3

The amount of expense recognised related to the write-down of inventories to net realisable value. [Refer: Inventories]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
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-IssueDate 2020-01-01
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2020-01-01
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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration