Segment Information: Capital Expenditures by Segment (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Payments to Acquire Property, Plant, and Equipment	$ 247.7	$ 214.6	$ 480.1	$ 407.4
Kinetic
Segment Reporting Information [Line Items]
Payments to Acquire Property, Plant, and Equipment	151.3	105.7	284.3	204.1
Enterprise
Segment Reporting Information [Line Items]
Payments to Acquire Property, Plant, and Equipment	24.1	36.5	50.8	78.6
Wholesale
Segment Reporting Information [Line Items]
Payments to Acquire Property, Plant, and Equipment	9.2	5.5	16.1	10.7
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Payments to Acquire Property, Plant, and Equipment	$ 63.1	$ 66.9	$ 128.9	$ 114.0