Commitments And Contingent Liabilities (Environmental Matters) (Detail)
$ in Millions |
Mar. 31, 2018
USD ($)
Potentially_Responsible_Party
entity
site
Station
Plant
mi
|
Dec. 31, 2017
mi
|
| Site Contingency [Line Items] |
|
|
| Number of miles related to the Passaic River constituting a facility as determined by the US Environmental Protection Agency | mi |
17
|
17
|
| Number of additional legal entities contacted by EPA in conjunction with Newark Bay study area contamination | entity |
11
|
|
| Number of operating electric generating stations located on Hackensack River | Station |
2
|
|
| Number of former MGP contamination sites located on Hackensack river in conjunction with Newark Bay study area contamination | site |
1
|
|
| PSE And G [Member] |
|
|
| Site Contingency [Line Items] |
|
|
| Percentage of cost attributable to potentially responsible party |
7.60%
|
|
| Pse G S Former Mgp Sites [Member] | Power [Member] |
|
|
| Site Contingency [Line Items] |
|
|
| Percentage of cost attributable to potentially responsible party |
1.90%
|
|
| Passaic River Site Contingency [Member] |
|
|
| Site Contingency [Line Items] |
|
|
| Estimated Cleanup Costs EPA Preferred Method |
$ 2,300
|
|
| Accrual for Environmental Loss Contingencies |
$ 57
|
|
| Number Of Additional Potentially Responsible Parties Directed By New Jersey Department Of Environmental Protection To Arrange Damage Assessment For Lower Passaic River | Potentially_Responsible_Party |
56
|
|
| Estimated cost of interim natural resource injury restoration |
$ 950
|
|
| Passaic River Site Contingency [Member] | PSE And G [Member] |
|
|
| Site Contingency [Line Items] |
|
|
| Number of former generating electric station | Plant |
1
|
|
| Number of former Manufactured Gas Plant (MGP) sites | Plant |
4
|
|
| Accrual for Environmental Loss Contingencies |
$ 46
|
|
| Passaic River Site Contingency [Member] | Power [Member] |
|
|
| Site Contingency [Line Items] |
|
|
| Accrual for Environmental Loss Contingencies |
11
|
|
| Mgp Remediation Site Contingency [Member] | PSE And G [Member] |
|
|
| Site Contingency [Line Items] |
|
|
| Remediation Liability Recorded As Other Current Liabilities |
79
|
|
| Remediation Liability Recorded As Other Noncurrent Liabilities |
266
|
|
| Regulatory Assets |
345
|
|
| Minimum [Member] | Passaic River Site Contingency [Member] |
|
|
| Site Contingency [Line Items] |
|
|
| Loss Contingency, Estimate of Possible Loss |
518
|
|
| Minimum [Member] | Mgp Remediation Site Contingency [Member] | PSE And G [Member] |
|
|
| Site Contingency [Line Items] |
|
|
| Loss Contingency, Estimate of Possible Loss |
345
|
|
| Accrual for Environmental Loss Contingencies |
345
|
|
| Maximum [Member] | Passaic River Site Contingency [Member] |
|
|
| Site Contingency [Line Items] |
|
|
| Loss Contingency, Estimate of Possible Loss |
3,200
|
|
| Maximum [Member] | Mgp Remediation Site Contingency [Member] | PSE And G [Member] |
|
|
| Site Contingency [Line Items] |
|
|
| Loss Contingency, Estimate of Possible Loss |
$ 391
|
|