Leases - SPPC - Schedule of Lease Maturity (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Operating
2025	$ 140
2026	116
2027	86
2028	57
2029	38
Thereafter	147
Total undiscounted lease payments	584
Less - amounts representing interest	(92)
Operating leases	492	$ 555
Finance
2025	67
2026	66
2027	63
2028	57
2029	37
Thereafter	493
Total undiscounted lease payments	783
Less - amounts representing interest	(371)
Finance leases	412	413
Total
2025	207
2026	182
2027	149
2028	114
2029	75
Thereafter	640
Total undiscounted lease payments	1,367
Less - amounts representing interest	(463)
Total lease liabilities	904	968
SPPC
Operating
2025	1
2026	1
2027	1
2028	1
2029	1
Thereafter	22
Total undiscounted lease payments	27
Less - amounts representing interest	(12)
Operating leases	15	15
Finance
2025	17
2026	16
2027	14
2028	13
2029	9
Thereafter	124
Total undiscounted lease payments	193
Less - amounts representing interest	(91)
Finance leases	102	103
Total
2025	18
2026	17
2027	15
2028	14
2029	10
Thereafter	146
Total undiscounted lease payments	220
Less - amounts representing interest	(103)
Total lease liabilities	$ 117	$ 118

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Present value of lessee's discounted obligation for lease payments from finance lease.

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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

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-Publisher FASB
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-URI https://asc.fasb.org/1943274/2147479041/842-20-45-1

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