Other Long-term Liabilities, Deferred Revenue (Details) $ in Millions		3 Months Ended		9 Months Ended
	Dec. 27, 2015 USD ($) bbl	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Dec. 31, 2017 USD ($)
Deferred Revenue and Other [Abstract]
Splitter estimated cost		$ 2,383.5	$ 1,663.1	$ 6,229.7	$ 4,737.8
Deferred revenue		176.4		176.4		$ 136.2
Channelview Splitter [Member]
Deferred Revenue and Other [Abstract]
Storage capacity of Channelview Terminal | bbl	730,000
Channelview Splitter capability to split crude oil and condensate barrel per day | bbl	35,000
Channelview Splitter project expected completion period	2018-12
Deferred revenue		$ 129.0		$ 129.0
Channelview Splitter [Member] | Oil and Gas Operation and Maintenance [Member]
Deferred Revenue and Other [Abstract]
Splitter estimated cost	$ 150.0