HELD FOR SALE - Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Disclosure of financial assets [line items]
Assets	$ 316,435	$ 323,969
Liabilities	205,369	207,123
United States
Disclosure of financial assets [line items]
Assets	156,990	149,687
Brazil
Disclosure of financial assets [line items]
Assets	18,708	$ 24,354
Assets and liabilities classified as held for sale
Disclosure of financial assets [line items]
Assets	3,200
Liabilities	$ 1,700

Expiry date 2020-01-01: The amount of resources: (a) controlled by the entity as a result of past events; and (b) from which future economic benefits are expected to flow to the entity. Effective 2020-01-01: The amount of a present economic resource controlled by the entity as a result of past events. Economic resource is a right that has the potential to produce economic benefits.

Expiry date 2020-01-01: The amount of present obligations of the entity arising from past events, the settlement of which is expected to result in an outflow from the entity of resources embodying economic benefits. Effective 2020-01-01: The amount of a present obligation of the entity to transfer an economic resource as a result of past events. Economic resource is a right that has the potential to produce economic benefits.

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