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Leases Reconciliation of Undiscounted Cash Flows (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
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Lessee, Lease, Description [Line Items] |  |
Total Minimum Lease Payments | $ 269 | $ 366
Reconciling Amount due to Discount Rate | (45) | (80)
Total Discounted Operating Lease Liabilities | 224 | 286
Public Service Electric and Gas Company |  |
Lessee, Lease, Description [Line Items] |  |
Total Minimum Lease Payments | 117 | 127
Reconciling Amount due to Discount Rate | (22) | (26)
Total Discounted Operating Lease Liabilities | 95 | 101
Other Segments |  |
Lessee, Lease, Description [Line Items] |  |
Total Minimum Lease Payments | 152 | 239
Reconciling Amount due to Discount Rate | (23) | (54)
Total Discounted Operating Lease Liabilities | $ 129 | $ 185

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- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918701-209980 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
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