Consolidated Balance Sheets - USD ($) $ in Millions		Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents		$ 36.1	$ 39.6
Accounts receivable:
Trade, net of allowance for bad debt of $0.3 and $0.5, respectively		88.5	80.6
Accrued revenue and other		636.6	447.5
Fair value of derivative assets		75.3	25.0
Other current assets		156.2	58.7
Total current assets		992.7	651.4
Property and equipment, net of accumulated depreciation of $4,215.7 and $3,863.0, respectively		6,425.1	6,652.1
Intangible assets, net of accumulated amortization of $763.2 and $668.8, respectively		1,081.6	1,125.4
Investment in unconsolidated affiliates		29.0	41.6
Fair value of derivative assets		2.2	4.9
Other assets, net		95.9	75.5
Total assets		8,626.5	8,550.9
Current liabilities:
Accounts payable and drafts payable		103.5	60.5
Accrued gas, NGLs, condensate, and crude oil purchases	[1]	529.8	291.5
Fair value of derivative liabilities		110.9	37.1
Current maturities of long-term debt		150.0	349.8
Other current liabilities		215.9	149.1
Total current liabilities		1,110.1	888.0
Long-term debt		4,242.6	4,244.0
Other long-term liabilities		92.1	94.8
Deferred tax liability, net		124.2	108.6
Fair value of derivative liabilities		2.3	2.5
Members’ equity:
Members’ equity (487,951,939 and 489,381,149 units issued and outstanding, respectively)		1,338.8	1,508.8
Accumulated other comprehensive loss		(4.2)	(15.3)
Non-controlling interest		1,720.6	1,719.5
Total members’ equity		3,055.2	3,213.0
Commitments and contingencies (Note 15)
Total liabilities and members’ equity		$ 8,626.5	$ 8,550.9

[1] Includes related party accounts payable balances of $1.9 million and $1.0 million at September 30, 2021 and December 31, 2020, respectively.