CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Current Assets:
Cash and cash equivalents	$ 349.2	$ 3.7
Receivables:
Trade, net	93.0	117.2
Other	13.7	15.2
Gas transportation receivables	9.1	7.5
Advances to affiliates	4.3	0.0
Prepayments	22.8	16.0
Other current assets	5.1	8.1
Total current assets	497.2	167.7
Property, Plant and Equipment:
Natural gas transmission and other plant	11,895.3	11,489.5
Construction work in progress	183.3	253.9
Property, plant and equipment, gross	12,078.6	11,743.4
Less—accumulated depreciation and amortization	3,517.3	3,263.7
Property, plant and equipment, net	8,561.3	8,479.7
Other Assets:
Goodwill	237.4	237.4
Gas stored underground	108.2	97.1
Other	162.9	161.2
Total other assets	508.5	495.7
Total Assets	9,567.0	9,143.1
Payables:
Trade	48.7	65.8
Affiliates	0.5	4.6
Other	12.6	11.6
Gas payables	5.9	6.4
Accrued taxes, other	86.6	60.1
Accrued interest	46.7	35.6
Accrued payroll and employee benefits	33.5	38.1
Construction retainage	19.4	16.8
Deferred income	6.0	2.2
Other current liabilities	34.3	28.3
Total current liabilities	294.2	269.5
Long-term debt and finance lease obligation	3,769.6	3,566.1
Other Liabilities and Deferred Credits:
Pension liability	16.5	20.5
Asset retirement obligations	55.2	56.8
Provision for other asset retirement	79.8	75.1
Other	113.7	95.6
Total other liabilities and deferred credits	265.2	248.0
Commitments and Contingencies
Partners’ Capital:
Partners' capital	5,316.2	5,140.6
Accumulated other comprehensive loss	(78.2)	(81.1)
Total partners’ capital	5,238.0	5,059.5
Total Liabilities and Partners' Capital	$ 9,567.0	$ 9,143.1