Rates and Other Regulatory Activities	6 Months Ended
Jun. 30, 2015
Regulated Operations [Abstract]
Rates and Other Regulatory Activities	Rates and Other Regulatory Activities Our natural gas and electric distribution operations in Delaware, Maryland and Florida are subject to regulation by their respective PSC; Eastern Shore, our natural gas transmission subsidiary, is subject to regulation by the FERC; and Peninsula Pipeline, our intrastate pipeline subsidiary, is subject to regulation by the Florida PSC. Chesapeake’s Florida natural gas distribution division and FPU’s natural gas and electric distribution operations continue to be subject to regulation by the Florida PSC as separate entities. Delaware There were no significant rates and other regulatory activities in Delaware during the first six months of 2015. Maryland There were no significant rates and other regulatory activities in Maryland during the first six months of 2015. Florida On January 16, 2015, Chesapeake's Florida natural gas distribution division filed a petition with the Florida PSC for approval of a contract with its affiliate, Peninsula Pipeline, for additional natural gas transportation services in the vicinity of Haines City, located in Polk County, Florida. This petition was approved by the Florida PSC at its Agenda Conference on May 5, 2015. On July 1, 2015, FPU's electric division filed a new depreciation study with the Florida PSC. Depending upon the Florida PSC's decision in this proceeding, we may be required to change depreciation expense for FPU's electric division. The PSC agenda date for review of the depreciation study has not yet been set. Eastern Shore White Oak Mainline Expansion Project: On November 21, 2014, Eastern Shore submitted an application to the FERC for a CP seeking authorization to construct, own, operate and maintain certain expansion facilities designed to provide 45,000 Dts/d of firm transportation service to an industrial customer in Kent County, Delaware. Eastern Shore proposes to construct approximately 7.2 miles of 16-inch diameter pipeline looping in Chester County, Pennsylvania and 3,550 horsepower of additional compression at Eastern Shore’s existing Delaware City Compressor Station in New Castle County, Delaware. The estimated cost of the project is $29.8 million. On January 22, 2015, the FERC issued a Notice of Intent to Prepare an Environmental Assessment for this project. In February, April and May 2015, Eastern Shore filed environmental data in response to comments regarding evaluation of alternative routes for a segment of the pipeline route in the vicinity of the Kemblesville Historic District. On June 2, 2015, a field meeting was conducted to review the proposed route and alternative routes. At the field meeting, the FERC Staff concluded that Eastern Shore should move forward with evaluating an alternative route, using its existing right-of-way and provide pertinent environmental information. FERC will issue a public notice inviting further comments in advance of issuing an Environmental Assessment. Eastern Shore began survey work on this route on June 29, 2015. Eastern Shore anticipates FERC approval of this project in the fourth quarter of 2015, and estimates that construction will start in the first quarter of 2016. System Reliability Project: On May 22, 2015, Eastern Shore submitted an application to the FERC for a CP seeking authorization to construct, own, operate and maintain approximately 10.1 miles of 16-inch pipeline looping and appurtenant auxiliary facilities in New Castle and Kent Counties, Delaware and a new compressor at its existing Bridgeville compressor station in Sussex County, Delaware. Eastern Shore further proposes to reinforce critical points on its pipeline system. The total project will benefit all of Eastern Shore’s customers by modifying the pipeline system to respond to severe operational conditions experienced during actual winter peak days in 2014 and 2015. The estimated cost of the project is $32.1 million. Since the project is intended solely to improve system reliability, Eastern Shore requested a predetermination of rolled-in rate treatment for the costs of the project and an order granting the CP by December 2015. On June 8, 2015, the FERC filed a notice of the CP application, and the comment period ended on June 29, 2015. Eastern Shore anticipates FERC approval of this project in the fourth quarter of 2015 and estimates that construction will start in the first quarter of 2016.

Rates and Other Regulatory Activities

Our natural gas and electric distribution operations in Delaware, Maryland and Florida are subject to regulation by their respective PSC; Eastern Shore, our natural gas transmission subsidiary, is subject to regulation by the FERC; and Peninsula Pipeline, our intrastate pipeline subsidiary, is subject to regulation by the Florida PSC. Chesapeake’s Florida natural gas distribution division and FPU’s natural gas and electric distribution operations continue to be subject to regulation by the Florida PSC as separate entities.

Delaware

There were no significant rates and other regulatory activities in Delaware during the first six months of 2015.

Maryland

There were no significant rates and other regulatory activities in Maryland during the first six months of 2015.

Florida

On January 16, 2015, Chesapeake's Florida natural gas distribution division filed a petition with the Florida PSC for approval of a contract with its affiliate, Peninsula Pipeline, for additional natural gas transportation services in the vicinity of Haines City, located in Polk County, Florida. This petition was approved by the Florida PSC at its Agenda Conference on May 5, 2015.

On July 1, 2015, FPU's electric division filed a new depreciation study with the Florida PSC. Depending upon the Florida PSC's decision in this proceeding, we may be required to change depreciation expense for FPU's electric division. The PSC agenda date for review of the depreciation study has not yet been set.

Eastern Shore

White Oak Mainline Expansion Project: On November 21, 2014, Eastern Shore submitted an application to the FERC for a CP seeking authorization to construct, own, operate and maintain certain expansion facilities designed to provide 45,000 Dts/d of firm transportation service to an industrial customer in Kent County, Delaware. Eastern Shore proposes to construct approximately 7.2 miles of 16-inch diameter pipeline looping in Chester County, Pennsylvania and 3,550 horsepower of additional compression at Eastern Shore’s existing Delaware City Compressor Station in New Castle County, Delaware. The estimated cost of the project is $29.8 million. On January 22, 2015, the FERC issued a Notice of Intent to Prepare an Environmental Assessment for this project. In February, April and May 2015, Eastern Shore filed environmental data in response to comments regarding evaluation of alternative routes for a segment of the pipeline route in the vicinity of the Kemblesville Historic District. On June 2, 2015, a field meeting was conducted to review the proposed route and alternative routes. At the field meeting, the FERC Staff concluded that Eastern Shore should move forward with evaluating an alternative route, using its existing right-of-way and provide pertinent environmental information. FERC will issue a public notice inviting further comments in advance of issuing an Environmental Assessment. Eastern Shore began survey work on this route on June 29, 2015. Eastern Shore anticipates FERC approval of this project in the fourth quarter of 2015, and estimates that construction will start in the first quarter of 2016.

System Reliability Project: On May 22, 2015, Eastern Shore submitted an application to the FERC for a CP seeking authorization to construct, own, operate and maintain approximately 10.1 miles of 16-inch pipeline looping and appurtenant auxiliary facilities in New Castle and Kent Counties, Delaware and a new compressor at its existing Bridgeville compressor station in Sussex County, Delaware. Eastern Shore further proposes to reinforce critical points on its pipeline system. The total project will benefit all of Eastern Shore’s customers by modifying the pipeline system to respond to severe operational conditions experienced during actual winter peak days in 2014 and 2015. The estimated cost of the project is $32.1 million. Since the project is intended solely to improve system reliability, Eastern Shore requested a predetermination of rolled-in rate treatment for the costs of the project and an order granting the CP by December 2015.

On June 8, 2015, the FERC filed a notice of the CP application, and the comment period ended on June 29, 2015. Eastern Shore anticipates FERC approval of this project in the fourth quarter of 2015 and estimates that construction will start in the first quarter of 2016.