Property, Plant and Equipment and Other Intangibles (Property, Plant and Equipment) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 8,163.9	$ 8,045.9
Construction work-in-progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment	93.9	89.5
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment	121.9	111.5
Buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment	124.2	121.8
Storage tanks
Property, Plant and Equipment [Line Items]
Property, plant and equipment	1,985.4	1,986.7
Pipeline and station equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment	3,430.7	3,386.0
Processing equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment	1,875.7	1,826.4
Rights-of-way and other
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 532.1	$ 524.0
Minimum | Buildings
Property, Plant and Equipment [Line Items]
Estimated depreciable life, years	10 years
Minimum | Storage tanks
Property, Plant and Equipment [Line Items]
Estimated depreciable life, years	10 years
Minimum | Pipeline and station equipment
Property, Plant and Equipment [Line Items]
Estimated depreciable life, years	10 years
Minimum | Processing equipment
Property, Plant and Equipment [Line Items]
Estimated depreciable life, years	3 years
Minimum | Rights-of-way and other
Property, Plant and Equipment [Line Items]
Estimated depreciable life, years	3 years
Maximum | Buildings
Property, Plant and Equipment [Line Items]
Estimated depreciable life, years	53 years
Maximum | Storage tanks
Property, Plant and Equipment [Line Items]
Estimated depreciable life, years	49 years
Maximum | Pipeline and station equipment
Property, Plant and Equipment [Line Items]
Estimated depreciable life, years	59 years
Maximum | Processing equipment
Property, Plant and Equipment [Line Items]
Estimated depreciable life, years	56 years
Maximum | Rights-of-way and other
Property, Plant and Equipment [Line Items]
Estimated depreciable life, years	53 years