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Rates and Other Regulatory Activities Rates and Regulatory Activities (Tables)
 9 Months Ended
Sep. 30, 2022
Rates and Regulatory Activities [Abstract]  
Summary of Effects of Federal Tax Reform on Regulated Businesses [Table Text Block] The following table summarizes the regulatory liabilities related to accumulated deferred taxes ("ADIT") associated with TCJA for our regulated businesses as of September 30, 2022 and December 31, 2021:
Amount (in thousands)
Operation and Regulatory JurisdictionSeptember 30, 2022December 31, 2021Status
Eastern Shore (FERC)$34,190$34,190Will be addressed in Eastern Shore's next rate case filing.
Chesapeake Delaware natural gas division (Delaware PSC)$12,469$12,591PSC approved amortization of ADIT in January 2019.
Chesapeake Maryland natural gas division (Maryland PSC)$3,737$3,840PSC approved amortization of ADIT in May 2018.
Sandpiper Energy (Maryland PSC)$3,612$3,656PSC approved amortization of ADIT in May 2018.
Chesapeake Florida natural gas division/CFG (Florida PSC)$7,892$8,032PSC issued order authorizing amortization and retention of net ADIT liability by the Company in February 2019.
FPU natural gas (excludes Fort Meade and Indiantown) (Florida PSC)$19,029$19,189Same treatment on a net basis as Chesapeake Florida Gas Division (above).
FPU Fort Meade and Indiantown natural gas divisions (Florida PSC)$262$271Same treatment on a net basis as Chesapeake Florida Gas Division (above).
FPU electric division (Florida PSC)$5,054$5,237In January 2019, PSC issued order approving amortization of ADIT through purchased power cost recovery, storm reserve and rates.
Elkton Gas (Maryland PSC)$1,066$1,091PSC approved amortization of ADIT in March 2018.