Derivative Instruments (Balance Sheet Disclosure) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosures [Abstract]
Derivative Assets	$ 3,525	$ 1,824
Derivative Liabilities	5,011	2,976
Derivative Asset, Current	1,590	689
Derivative Asset, Noncurrent	1,935	1,135
Derivative Liability, Current	2,102	1,263
Derivative Liability, Noncurrent	2,909	1,713
Current derivative assets
Derivative Instruments and Hedging Activities Disclosures [Abstract]
Margin cash collateral received from counterparties	299	150
Non Current Derivative Assets Member
Derivative Instruments and Hedging Activities Disclosures [Abstract]
Margin cash collateral received from counterparties	262	56
Current derivative liabilities
Derivative Instruments and Hedging Activities Disclosures [Abstract]
Margin cash collateral paid to counterparties	328	6
Noncurrent derivative liabilities
Derivative Instruments and Hedging Activities Disclosures [Abstract]
Margin cash collateral paid to counterparties	1,213	172
Commodity contracts | Fair Value, Recurring [Member]
Derivative Instruments and Hedging Activities Disclosures [Abstract]
Derivative assets, Netting	(12,030)	(6,622)
Derivative liability, Netting	(13,010)	(6,594)
Derivative Assets	2,995	1,757
Derivative Liabilities	4,743	2,198
Commodity contracts | Level 1 | Fair Value, Recurring [Member]
Derivative Instruments and Hedging Activities Disclosures [Abstract]
Total derivative assets	5,372	1,896
Total derivative liabilities	7,185	2,571
Commodity contracts | Level 2 | Fair Value, Recurring [Member]
Derivative Instruments and Hedging Activities Disclosures [Abstract]
Total derivative assets	7,559	5,082
Total derivative liabilities	7,620	4,990
Commodity contracts | Level 3 | Fair Value, Recurring [Member]
Derivative Instruments and Hedging Activities Disclosures [Abstract]
Total derivative assets	2,094	1,401
Total derivative liabilities	2,948	1,231
Interest rate contracts | Fair Value, Recurring [Member]
Derivative Instruments and Hedging Activities Disclosures [Abstract]
Derivative assets, Netting	(49)	(30)
Derivative liability, Netting	(49)	(30)
Derivative Assets	534	76
Derivative Liabilities	142	709
Interest rate contracts | Level 1 | Fair Value, Recurring [Member]
Derivative Instruments and Hedging Activities Disclosures [Abstract]
Total derivative assets	0	0
Total derivative liabilities	0	0
Interest rate contracts | Level 2 | Fair Value, Recurring [Member]
Derivative Instruments and Hedging Activities Disclosures [Abstract]
Total derivative assets	583	106
Total derivative liabilities	191	739
Interest rate contracts | Level 3 | Fair Value, Recurring [Member]
Derivative Instruments and Hedging Activities Disclosures [Abstract]
Total derivative assets	0	0
Total derivative liabilities	0	0
Foreign currency contracts | Fair Value, Recurring [Member]
Derivative Instruments and Hedging Activities Disclosures [Abstract]
Derivative assets, Netting	(4)	(17)
Derivative liability, Netting	(4)	(17)
Derivative Assets	(4)	(9)
Derivative Liabilities	126	69
Foreign currency contracts | Level 1 | Fair Value, Recurring [Member]
Derivative Instruments and Hedging Activities Disclosures [Abstract]
Total derivative assets	0	0
Total derivative liabilities	0	0
Foreign currency contracts | Level 2 | Fair Value, Recurring [Member]
Derivative Instruments and Hedging Activities Disclosures [Abstract]
Total derivative assets	0	8
Total derivative liabilities	130	86
Foreign currency contracts | Level 3 | Fair Value, Recurring [Member]
Derivative Instruments and Hedging Activities Disclosures [Abstract]
Total derivative assets	0	0
Total derivative liabilities	0	0
FPL [Member]
Derivative Instruments and Hedging Activities Disclosures [Abstract]
Derivative Assets	29
Derivative Liabilities	13	10
Derivative Asset, Current	19	13
Derivative Asset, Noncurrent	10
Derivative Liability, Current	12	9
Derivative Liability, Noncurrent	$ 1	$ 1
Derivative Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other	Other
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration]	Other	Other
Derivative Asset, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other	Other
FPL [Member] | Commodity contracts | Fair Value, Recurring [Member]
Derivative Instruments and Hedging Activities Disclosures [Abstract]
Derivative assets, Netting	$ (7)	$ (3)
Derivative liability, Netting	(7)	(3)
Derivative Assets	29	13
Derivative Liabilities	13	10
FPL [Member] | Commodity contracts | Level 1 | Fair Value, Recurring [Member]
Derivative Instruments and Hedging Activities Disclosures [Abstract]
Total derivative assets	0	0
Total derivative liabilities	0	0
FPL [Member] | Commodity contracts | Level 2 | Fair Value, Recurring [Member]
Derivative Instruments and Hedging Activities Disclosures [Abstract]
Total derivative assets	11	3
Total derivative liabilities	4	8
FPL [Member] | Commodity contracts | Level 3 | Fair Value, Recurring [Member]
Derivative Instruments and Hedging Activities Disclosures [Abstract]
Total derivative assets	25	13
Total derivative liabilities	$ 16	$ 5