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Leases (Scheduled Maturities of Lease Liabilities) (Detail) $ in Millions | Dec. 31, 2024 USD ($)
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Lessee Lease Disclosure [Line Items] |
Maturity of Lease Liabilities, Operating, 2025 | $ 41
Maturity of Lease Liabilities, Operating, 2026 | 39
Maturity of Lease Liabilities, Operating, 2027 | 36
Maturity of Lease Liabilities, Operating, 2028 | 35
Maturity of Lease Liabilities, Operating, 2029 | 34
Maturity of Lease Liabilities, Operating, After 2029 | 1,131
Maturity of Lease Liabilities, Operating, Total undiscounted lease payments | 1,316
Present value adjustment, Operating | (636)
Present value of lease liabilities, Operating | 680
Maturity of Lease Liabilities, Finance, 2025 | 78
Maturity of Lease Liabilities, Finance, 2026 | 69
Maturity of Lease Liabilities, Finance, 2027 | 64
Maturity of Lease Liabilities, Finance, 2028 | 56
Maturity of Lease Liabilities, Finance, 2029 | 40
Maturity of Lease Liabilities, Finance, After 2029 | 17
Maturity of Lease Liabilities, Finance, Total undiscounted lease payments | 324
Present value adjustment, Finance | (48)
Present value of lease liabilities, Finance | 276
Virginia Electric and Power Company |
Lessee Lease Disclosure [Line Items] |
Maturity of Lease Liabilities, Operating, 2025 | 25
Maturity of Lease Liabilities, Operating, 2026 | 23
Maturity of Lease Liabilities, Operating, 2027 | 22
Maturity of Lease Liabilities, Operating, 2028 | 21
Maturity of Lease Liabilities, Operating, 2029 | 20
Maturity of Lease Liabilities, Operating, After 2029 | 740
Maturity of Lease Liabilities, Operating, Total undiscounted lease payments | 851
Present value adjustment, Operating | (430)
Present value of lease liabilities, Operating | 421
Maturity of Lease Liabilities, Finance, 2025 | 43
Maturity of Lease Liabilities, Finance, 2026 | 36
Maturity of Lease Liabilities, Finance, 2027 | 32
Maturity of Lease Liabilities, Finance, 2028 | 26
Maturity of Lease Liabilities, Finance, 2029 | 18
Maturity of Lease Liabilities, Finance, After 2029 | 17
Maturity of Lease Liabilities, Finance, Total undiscounted lease payments | 172
Present value adjustment, Finance | (27)
Present value of lease liabilities, Finance | $ 145

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- Definition Present value of lessee's discounted obligation for lease payments from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-6 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
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- Definition Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-6 + Details
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- Definition Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-6 + Details
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- Definition Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-6 + Details
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- Definition Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-6 + Details
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- Definition Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-6 + Details
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- Definition Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-6 + Details
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- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease due after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-6 + Details
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- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-6 + Details
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- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-6 + Details
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- Definition Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-6 + Details
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