NON-RECOURSE BORROWINGS - Schedule of Current and Non-current property specific mortgages (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Disclosure of financial liabilities [abstract]
Current	$ 20,970	$ 15,696
Non-current	107,586	112,173
Total	$ 128,556	$ 127,869

The amount of current secured bank loans received and the current portion of non-current secured bank loans received. [Refer: Secured bank loans received]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2019-03-27

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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

- Definition

The non-current portion of non-current secured bank loans received. [Refer: Secured bank loans received]

+ References

+ Details

Name:	ifrs-full_NoncurrentPortionOfNoncurrentSecuredBankLoansReceived
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of loans received from banks that have been secured by collateral. [Refer: Loans received]

+ References

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant