Acquisitions and Dispositions (Purchase Price Allocation - Power and Industrial Segment Acquisition) (Details) - South Jersey Industries, Combined Heat and Power Generation Facility - Power and Industrial Projects $ in Millions	Feb. 18, 2020 USD ($)
Business Acquisition [Line Items]
Property, plant, and equipment, net	$ 76
Working capital	2
Total	95
Contract intangibles
Business Acquisition [Line Items]
Contract intangibles	$ 17