RISK MANAGEMENT AND FINANCIAL INSTRUMENTS - Notional Principal or Quantity Information (Details) - Jun. 30, 2022 € in Millions, ¥ in Millions, £ in Millions, $ in Millions, $ in Millions	USD ($)	GBP (£)	EUR (€)	JPY (¥)	CAD ($)	Bcf	MMBbls	MWh
Foreign exchange contracts - forwards - purchase
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
Derivative Notional Amount Outstanding	$ 2,262			¥ 84,800
Foreign exchange contracts - forwards - purchase | United States dollar
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2022	762
2023	0
2024	1,000
2025	500
2026	0
Thereafter	0
Foreign exchange contracts - forwards - purchase | Japanese yen
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2022 | ¥				0
2023 | ¥				0
2024 | ¥				0
2025 | ¥				84,800
2026 | ¥				0
Thereafter | ¥				¥ 0
Foreign exchange contracts - forwards - sell
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
Derivative Notional Amount Outstanding	24,824	£ 163	€ 765
Foreign exchange contracts - forwards - sell | United States dollar
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2022	4,900
2023	6,384
2024	5,134
2025	3,962
2026	3,362
Thereafter	$ 1,082
Foreign exchange contracts - forwards - sell | GBP
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2022 | £		14
2023 | £		29
2024 | £		30
2025 | £		30
2026 | £		28
Thereafter | £		£ 32
Foreign exchange contracts - forwards - sell | Euro
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2022 | €			68
2023 | €			92
2024 | €			91
2025 | €			86
2026 | €			85
Thereafter | €			€ 343
Interest rate contracts - short-term borrowings
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2022					$ 5,242
2023					1,346
2024					132
2025					30
2026					26
Thereafter					64
Derivative Notional Amount Outstanding					6,840
Interest rate contracts - long-term debt pay fixed rate
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2022					3,052
2023					2,626
2024					1,718
2025					573
2026					0
Thereafter					0
Derivative Notional Amount Outstanding					7,969
Equity contracts
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2022					0
2023					36
2024					30
2025					11
2026					0
Thereafter					0
Derivative Notional Amount Outstanding					$ 77
Commodity contracts
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
Derivative Nonmonetary Notional Amount Outstanding						195,000,000	10,000,000
Commodity contracts | Natural gas
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2022 (bcf / mmbbls) | Bcf						120,000,000
2023 (bcf / mmbbls) | Bcf						47,000,000
2024 (bcf / mmbbls) | Bcf						17,000,000
2025 (bcf / mmbbls) | Bcf						11,000,000
2026 (bcf / mmbbls) | Bcf						0
Thereafter (bcf / mmbbls) | Bcf						0
Commodity contracts | Crude
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2022 (bcf / mmbbls) | MMBbls							10,000,000
2023 (bcf / mmbbls) | MMBbls							0
2024 (bcf / mmbbls) | MMBbls							0
2025 (bcf / mmbbls) | MMBbls							0
2026 (bcf / mmbbls) | MMBbls							0
Thereafter (bcf / mmbbls) | MMBbls							0
Net sell | Commodity contracts | Power
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2022 (MWH) | MWh								(24,000,000)
2023 (MWH) | MWh								(43,000,000)
2024 (MWH) | MWh								(43,000,000)
2025 (MWH) | MWh								(43,000,000)
2026 (MWH) | MWh								0
Thereafter (MWH) | MWh								0
Total (MWH) | MWh								(40)