Subsequent Event	3 Months Ended
Subsequent Event	Dec. 31, 2012
Subsequent Event [Line Items]
Subsequent Events	Subsequent Event In late October 2012, high winds, heavy rainfall and the related flooding throughout PSE&G's service territory associated with Hurricane Sandy caused severe damage to PSE&G's transmission and distribution system throughout its service territory as well as to some of Power's generation infrastructure mainly in the northern part of New Jersey. The walls of water created by the storm surge flooded a large number of substations along the Passaic, Raritan and Hudson rivers. The magnitude of the flooding in contiguous areas is unprecedented. During the course of the storm, approximately 1.7 million of PSE&G's customers were without power. In terms of customer outages, this was the most in PSE&G's history, surpassing both Tropical Storm Irene and the October snowstorm in 2011. With the assistance of mutual aid crews from other utilities, PSE&G's associates are working to minimize the length of time its customers are without electric or gas service. PSE&G and Power are unable to estimate the possible loss or range of loss related to Hurricane Sandy; however, such costs could be material. On October 26, 2012, PSE&G filed a petition with the BPU seeking authorization to defer on its books actually incurred, uninsured, incremental storm restoration costs associated with its gas and electric distribution systems. PSE&G requested similar relief in August 2011 as Tropical Storm Irene approached. Both requests are currently pending before the BPU. Power and PSE&G maintain property insurance for both nuclear and non-nuclear property. PSE&G and Power intend to seek recovery from their insurers for any property damage above their self-insured retentions; however, no assurances can be given relative to the timing or amount of such recoveries.
PSE And G [Member]
Subsequent Event [Line Items]
Subsequent Events	Subsequent Event In late October 2012, high winds, heavy rainfall and the related flooding throughout PSE&G's service territory associated with Hurricane Sandy caused severe damage to PSE&G's transmission and distribution system throughout its service territory as well as to some of Power's generation infrastructure mainly in the northern part of New Jersey. The walls of water created by the storm surge flooded a large number of substations along the Passaic, Raritan and Hudson rivers. The magnitude of the flooding in contiguous areas is unprecedented. During the course of the storm, approximately 1.7 million of PSE&G's customers were without power. In terms of customer outages, this was the most in PSE&G's history, surpassing both Tropical Storm Irene and the October snowstorm in 2011. With the assistance of mutual aid crews from other utilities, PSE&G's associates are working to minimize the length of time its customers are without electric or gas service. PSE&G and Power are unable to estimate the possible loss or range of loss related to Hurricane Sandy; however, such costs could be material. On October 26, 2012, PSE&G filed a petition with the BPU seeking authorization to defer on its books actually incurred, uninsured, incremental storm restoration costs associated with its gas and electric distribution systems. PSE&G requested similar relief in August 2011 as Tropical Storm Irene approached. Both requests are currently pending before the BPU. Power and PSE&G maintain property insurance for both nuclear and non-nuclear property. PSE&G and Power intend to seek recovery from their insurers for any property damage above their self-insured retentions; however, no assurances can be given relative to the timing or amount of such recoveries.
Power [Member]
Subsequent Event [Line Items]
Subsequent Events	Subsequent Event In late October 2012, high winds, heavy rainfall and the related flooding throughout PSE&G's service territory associated with Hurricane Sandy caused severe damage to PSE&G's transmission and distribution system throughout its service territory as well as to some of Power's generation infrastructure mainly in the northern part of New Jersey. The walls of water created by the storm surge flooded a large number of substations along the Passaic, Raritan and Hudson rivers. The magnitude of the flooding in contiguous areas is unprecedented. During the course of the storm, approximately 1.7 million of PSE&G's customers were without power. In terms of customer outages, this was the most in PSE&G's history, surpassing both Tropical Storm Irene and the October snowstorm in 2011. With the assistance of mutual aid crews from other utilities, PSE&G's associates are working to minimize the length of time its customers are without electric or gas service. PSE&G and Power are unable to estimate the possible loss or range of loss related to Hurricane Sandy; however, such costs could be material. On October 26, 2012, PSE&G filed a petition with the BPU seeking authorization to defer on its books actually incurred, uninsured, incremental storm restoration costs associated with its gas and electric distribution systems. PSE&G requested similar relief in August 2011 as Tropical Storm Irene approached. Both requests are currently pending before the BPU. Power and PSE&G maintain property insurance for both nuclear and non-nuclear property. PSE&G and Power intend to seek recovery from their insurers for any property damage above their self-insured retentions; however, no assurances can be given relative to the timing or amount of such recoveries.