Condensed Consolidated Balance Sheets - Progress Energy (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Allowance for doubtful accounts - receivables	$ 102	$ 55
Inventory	4,281	4,292
Regulatory assets	3,082	3,648
Current Assets: Other	359	431
Regulatory assets	13,636	13,618
Accounts payable	3,364	4,228
Current maturities of long-term debt	2,274	2,800
Long-Term Debt	74,979	72,452
Other	$ 1,352	$ 1,393
Common stock, par value (in usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	2,000,000,000	2,000,000,000
Common stock, shares outstanding (in shares)	772,000,000	771,000,000
Variable Interest Entity
Allowance for doubtful accounts - receivables of VIEs	$ 102	$ 150
Inventory	470	462
Regulatory assets	110	110
Current Assets: Other	44	90
Regulatory assets	1,616	1,642
Accounts payable	188	188
Current maturities of long-term debt	929	428
Long-Term Debt	2,134	3,000
Other	42	35
Progress Energy
Allowance for doubtful accounts - receivables	20	18
Inventory	1,987	1,901
Regulatory assets	1,359	1,661
Current Assets: Other	122	134
Regulatory assets	6,526	6,430
Accounts payable	1,174	1,374
Current maturities of long-term debt	659	661
Long-Term Debt	23,389	22,948
Other	$ 238	$ 227
Common stock, par value (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	100	100
Common stock, shares outstanding (in shares)	100	100
Progress Energy | Variable Interest Entity
Allowance for doubtful accounts - receivables of VIEs	$ 53	$ 56
Inventory	470	462
Regulatory assets	98	98
Current Assets: Other	29	68
Regulatory assets	1,423	1,446
Accounts payable	179	188
Current maturities of long-term debt	418	418
Long-Term Debt	1,862	1,910
Other	$ 22	$ 19