RISK MANAGEMENT AND FINANCIAL INSTRUMENTS - Notional Principal or Quantity Information (Details) - Mar. 31, 2023 € 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	$ 2,332			¥ 84,800
Foreign exchange contracts - forwards - purchase | United States dollar
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2023	832
2024	1,000
2025	500
2026	0
2027	0
Thereafter	0
Foreign exchange contracts - forwards - purchase | Japanese yen
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2023 | ¥				0
2024 | ¥				0
2025 | ¥				84,800
2026 | ¥				0
2027 | ¥				0
Thereafter | ¥				¥ 0
Foreign exchange contracts - forwards - sell
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
Derivative Notional Amount Outstanding	22,891	£ 141	€ 674
Foreign exchange contracts - forwards - sell | United States dollar
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2023	4,566
2024	4,708
2025	4,763
2026	4,157
2027	2,969
Thereafter	$ 1,728
Foreign exchange contracts - forwards - sell | GBP
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2023 | £		21
2024 | £		30
2025 | £		30
2026 | £		28
2027 | £		32
Thereafter | £		£ 0
Foreign exchange contracts - forwards - sell | Euro
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2023 | €			69
2024 | €			91
2025 | €			86
2026 | €			85
2027 | €			81
Thereafter | €			€ 262
Interest rate contracts - short-term borrowings
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2023					$ 7,821
2024					1,929
2025					80
2026					26
2027					25
Thereafter					39
Derivative Notional Amount Outstanding					9,920
Interest rate contracts - short-term debt receive
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2023					711
2024					947
2025					947
2026					179
2027					0
Thereafter					0
Derivative Notional Amount Outstanding					2,784
Interest rate contracts - long-term debt pay fixed rate
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2023					4,153
2024					1,494
2025					588
2026					0
2027					0
Thereafter					0
Derivative Notional Amount Outstanding					6,235
Equity contracts
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2023					0
2024					32
2025					12
2026					0
2027					0
Thereafter					0
Derivative Notional Amount Outstanding					$ 44
Commodity contracts
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
Derivative Nonmonetary Notional Amount Outstanding						93,000,000	11,000,000
Commodity contracts | Natural gas
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2023 (bcf / mmbbls) | Bcf						34,000,000
2024 (bcf / mmbbls) | Bcf						25,000,000
2025 (bcf / mmbbls) | Bcf						23,000,000
2026 (bcf / mmbbls) | Bcf						8,000,000
2027 (bcf / mmbbls) | Bcf						3,000,000
Thereafter (bcf / mmbbls) | Bcf						0
Commodity contracts | Crude
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2023 (bcf / mmbbls) | MMBbls							11,000,000
2024 (bcf / mmbbls) | MMBbls							0
2025 (bcf / mmbbls) | MMBbls							0
2026 (bcf / mmbbls) | MMBbls							0
2027 (bcf / mmbbls) | MMBbls							0
Thereafter (bcf / mmbbls) | MMBbls							0
Net sell | Commodity contracts | Power
RISK MANAGEMENT AND FINANCIAL INSTRUMENTS
2023 (MWH) | MWh								19,000,000
2024 (MWH) | MWh								(31,000,000)
2025 (MWH) | MWh								(46,000,000)
2026 (MWH) | MWh								0
2027 (MWH) | MWh								0
Thereafter (MWH) | MWh								0
Total (MWH) | MWh								(17)