Restricted Cash, Deposits and Marketable Securities (Narrative) (Details)	6 Months Ended	12 Months Ended
Jun. 30, 2021	Dec. 31, 2020
Disclosure of financial assets [line items]
Short-term deposits interest rate		0.27%
WACHOVIA [Member]
Disclosure of financial assets [line items]
Bonds coupon rate	4.435%
Bonds Maturity date	Dec. 30, 2020
Bonds rating	Baa3
Annual interest rate	5.80%

The description of credit rating agencies used to evaluate the credit quality of the entity's financial assets. [Refer: Financial assets]

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Note Expiry date 2021-01-01
-Name IFRS
-Number 7
-IssueDate 2020-01-01
-Paragraph IG24
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_IG24_b&doctype=Implementation%20Guidance&book=b
-URIDate 2020-01-01

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Note Expiry date 2021-01-01
-Name IFRS
-Number 7
-IssueDate 2020-01-01
-Paragraph 36
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_36_c&doctype=Standard&book=b
-URIDate 2020-01-01

Name:	ifrs-full_DescriptionOfRatingAgenciesUsed
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration