DISPOSITION OF BUSINESSES (Details) - Disposal Group Disposed Of By Sale Not Discontinued Operations $ in Millions	May 12, 2021 USD ($)
Disclosure of interest in other entities [Line Items]
Gains (losses) on disposals of non-current assets	$ 155
U.K. regulated distribution operation
Disclosure of interest in other entities [Line Items]
Disposal group, including discontinued operation, consideration	820
Cash flows from losing control of subsidiaries or other businesses	340
Gains (losses) on disposals of non-current assets	195
Increase (decrease) through transfer between revaluation surplus and retained earnings, equity	142
Reclassification adjustments on exchange differences on translation, net of tax	$ 17

Disclosure of interest in other entities [Line Items]

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- Definition

Disposal Group, Including Discontinued Operation, Consideration

+ References

No definition available.

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- Definition

The aggregate cash flows arising from losing control of subsidiaries or other businesses, classified as investing activities. [Refer: Subsidiaries [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The gains (losses) on disposals of non-current assets. [Refer: Non-current assets]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The increase (decrease) in equity resulting from transfers between a revaluation surplus and retained earnings. [Refer: Retained earnings; Revaluation surplus]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The amount of reclassification adjustments related to exchange differences when the financial statements of foreign operations are translated, net of tax. Reclassification adjustments are amounts reclassified to profit (loss) in the current period that were recognised in other comprehensive income in the current or previous periods. [Refer: Other comprehensive income]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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