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Property, Plant and Equipment	12 Months Ended
Property, Plant and Equipment	Dec. 31, 2023
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	20. PROPERTY, PLANT AND EQUIPMENT PP&E consisted of the following regulated and non-regulated assets: As at December 31 December 31 millions of dollars Estimated useful life 2023 2022 Generation 3 to 131 $ 13,500 $ 13,083 Transmission 10 to 80 2,835 2,731 Distribution 4 to 80 7,417 6,978 Gas transmission and distribution 6 to 92 5,536 5,061 General plant and other (1) 2 to 71 2,985 2,723 Total cost 32,273 30,576 Less: Accumulated depreciation (1) (9,994) (9,574) 22,279 21,002 Construction work in progress (1) 2,097 1,994 Net book value $ 24,376 $ 22,996 (1) SeaCoast owns a 50 % undivided ownership interest in a jointly owned 26 -mile pipeline lateral located in Florida, which went into service in 2020. At December 31, 2023, SeaCoast’s share of plant in service was $ 27 million USD (2022 – $ 27 million USD), and accumulated depreciation of $ 2 million USD (2022 – $ 1 million USD). SeaCoast’s undivided ownership interest is financed with its funds and all operations are accounted for as if such participating interest were a wholly owned facility. SeaCoast’s share of direct expenses of the jointly owned pipeline is included in "OM&G" in the Consolidated Statements of Income.