Related Party Transactions (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Related Party Transaction [Line Items]
Cost of sales, exclusive of operating expenses and depreciation and amortization	[1],[2]	$ 1,400.8	$ 549.5	$ 3,390.6	$ 1,702.5
Accounts payable to related party		1.9		1.9		$ 1.0
Cedar Cove Joint Venture
Related Party Transaction [Line Items]
Cost of sales, exclusive of operating expenses and depreciation and amortization		4.9	2.0	11.7	6.2
Accounts payable to related party		1.9		1.9		$ 1.0
GIP
Related Party Transaction [Line Items]
General and administrative expenses from transactions with related party		$ 0.0	$ 0.2	$ 0.2	$ 0.2

[1] Includes related party cost of sales of $11.7 million and $6.2 million for the nine months ended September 30, 2021 and 2020, respectively, and excludes all operating expenses as well as depreciation and amortization related to our operating segments of $449.9 million and $475.5 million for the nine months ended September 30, 2021 and 2020, respectively.

[2] Includes related party cost of sales of $4.9 million and $2.0 million for the three months ended September 30, 2021 and 2020, respectively, and excludes all operating expenses as well as depreciation and amortization related to our operating segments of $150.8 million and $158.6 million for the three months ended September 30, 2021 and 2020, respectively.