Leases - Future Minimum Lease Payments (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Operating Leases
2023	$ 64
2024	65
2025	65
2026	64
2027	64
All years thereafter	419
Total future minimum lease payments	741
Less: imputed interest	(162)
Total	579
Operating lease liabilities (current)	103	$ 113
Operating lease liabilities held for sale (current)	33
Operating lease liabilities (noncurrent)	476	$ 717
Operating lease liabilities held for sale (noncurrent)	249
Total	861
Finance Leases
2023	0
2024	1
2025	0
2026	0
2027	0
All years thereafter	1
Total future minimum lease payments	2
Less: imputed interest	0
Total	2
Other current liabilities	0
Other noncurrent liabilities	2
Total	$ 2
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Liabilities, Current	Liabilities, Current
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Liabilities, Other than Long-Term Debt, Noncurrent	Liabilities, Other than Long-Term Debt, Noncurrent
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Liabilities, Other than Long-Term Debt, Noncurrent, Other Liabilities	Liabilities, Other than Long-Term Debt, Noncurrent, Other Liabilities
Clean Energy Businesses
Operating Leases
2023	$ 19
2024	18
2025	19
2026	17
2027	17
All years thereafter	492
Less: imputed interest	(301)
Operating lease liabilities (current)	281
CECONY
Operating Leases
2023	64
2024	64
2025	64
2026	64
2027	64
All years thereafter	419
Total future minimum lease payments	739
Less: imputed interest	(161)
Total	578
Operating lease liabilities (current)	103	$ 90
Operating lease liabilities held for sale (current)		0
Operating lease liabilities (noncurrent)	475	462
Operating lease liabilities held for sale (noncurrent)		$ 0
Total	578
Finance Leases
2023	0
2024	1
2025	0
2026	0
2027	0
All years thereafter	0
Total future minimum lease payments	1
Less: imputed interest	0
Total	1
Other current liabilities	0
Other noncurrent liabilities	1
Total	$ 1

Finance Lease, Liability, Including Held-For-Sale Amounts

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