Condensed Consolidated Balance Sheets - Piedmont - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Current Assets
Receivables of VIEs (net of allowance for doubtful accounts)	$ 3,244	$ 3,106
Inventory	4,118	3,584
Regulatory assets	3,489	3,485
Other (includes amounts related to VIEs)	602	973
Total current assets	13,048	13,222
Property, Plant and Equipment
Cost	170,941	163,839
Accumulated depreciation and amortization	(54,994)	(52,100)
Facilities to be retired, net	0	9
Net property, plant and equipment	115,947	111,748
Other Noncurrent Assets
Goodwill	19,303	19,303
Regulatory assets	13,745	14,645
Operating lease right-of-use assets, net	1,073	1,042
Investments in equity method unconsolidated affiliates	505	455
Other	3,698	3,400
Total other noncurrent assets	52,165	53,116
Total Assets	181,160	178,086
Current Liabilities
Accounts payable	3,539	4,754
Taxes accrued	991	722
Interest accrued	750	626
Current maturities of long-term debt	4,034	3,878
Regulatory liabilities	1,396	1,466
Other	2,087	2,167
Total current liabilities	17,160	18,873
Long-Term Debt (includes amounts related to VIEs)	71,353	65,873
Other Noncurrent Liabilities
Deferred income taxes	10,438	9,964
Asset retirement obligations	11,613	11,955
Regulatory liabilities	13,396	13,582
Operating lease liabilities	897	876
Accrued pension and other post-retirement benefit costs	662	832
Other (includes $54 at 2023 related to VIEs)	1,325	1,502
Total other noncurrent liabilities	40,821	41,487
Commitments and Contingencies
Equity
Common stock	1	1
Retained earnings	2,036	2,637
Total Duke Energy Corporation stockholders' equity	49,006	49,322
Noncontrolling interests	2,820	2,531
Total equity	51,826	51,853
Total Liabilities and Equity	181,160	178,086
Piedmont
Current Assets
Receivables of VIEs (net of allowance for doubtful accounts)	99	436
Inventory	88	172
Regulatory assets	120	119
Other (includes amounts related to VIEs)	63	4
Total current assets	382	742
Property, Plant and Equipment
Cost	11,595	10,869
Accumulated depreciation and amortization	(2,230)	(2,081)
Facilities to be retired, net	0	9
Net property, plant and equipment	9,365	8,797
Other Noncurrent Assets
Goodwill	49	49
Regulatory assets	415	392
Operating lease right-of-use assets, net	3	4
Investments in equity method unconsolidated affiliates	78	79
Other	288	272
Total other noncurrent assets	833	796
Total Assets	10,580	10,335
Current Liabilities
Accounts payable	209	345
Taxes accrued	44	74
Interest accrued	49	40
Current maturities of long-term debt	85	45
Regulatory liabilities	98	74
Other	66	81
Total current liabilities	896	1,224
Long-Term Debt (includes amounts related to VIEs)	3,628	3,318
Other Noncurrent Liabilities
Deferred income taxes	948	870
Asset retirement obligations	28	26
Regulatory liabilities	993	1,024
Operating lease liabilities	10	13
Accrued pension and other post-retirement benefit costs	7	7
Other (includes $54 at 2023 related to VIEs)	176	180
Total other noncurrent liabilities	2,162	2,120
Commitments and Contingencies
Equity
Common stock	1,635	1,635
Retained earnings	2,258	2,037
Total Duke Energy Corporation stockholders' equity	3,893	3,672
Noncontrolling interests	1	1
Total equity	3,894	3,673
Total Liabilities and Equity	10,580	10,335
Piedmont | Affiliated Entity
Current Assets
Receivables of VIEs (net of allowance for doubtful accounts)	12	11
Current Liabilities
Accounts payable	48	51
Notes payable to affiliated companies	$ 297	$ 514