CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Assets
Cash and cash equivalents	$ 1.5	$ 2.6
Accounts receivable—affiliate:
From contracts with customers	108.1	93.2
Other current assets	4.2	5.6
Total current assets	113.8	101.4
Equity investments	103.6	108.4
Property, plant and equipment, net	3,094.5	3,111.3
Long-term receivable—affiliate	0.9	0.9
Deferred tax asset	66.4	42.5
Other noncurrent assets	9.4	10.0
Total assets	3,388.6	3,374.5
Liabilities
Accounts payable—trade	20.3	30.0
Accounts payable—affiliate	18.6	21.0
Accrued liabilities	40.2	54.1
Current maturities of long-term debt	12.5	10.0
Other current liabilities	2.7	9.9
Total current liabilities	94.3	125.0
Long-term debt	1,886.2	1,900.1
Other noncurrent liabilities	23.0	23.4
Total liabilities	2,003.5	2,048.5
Partners' capital
Total partners' capital	184.0	125.0
Noncontrolling interest	1,201.1	1,201.0
Total partners' capital	1,385.1	1,326.0
Total liabilities and partners' capital	3,388.6	3,374.5
Class A Shares
Partners' capital
Common unitholders	184.0	125.0
Total partners' capital	$ 184.0	$ 125.0