CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Current Assets:
Cash and cash equivalents	$ 375.6	$ 39.1
Receivables:
Trade, net	126.5	126.2
Other	25.1	31.4
Gas transportation receivables	16.9	8.0
Advances to affiliates	2.7	0.0
Gas stored underground	34.8	26.1
Prepayments	16.2	21.4
Other current assets	7.0	7.1
Total current assets	604.8	259.3
Property, Plant and Equipment:
Natural gas transmission and other plant	12,344.8	12,248.6
Construction work in progress	200.1	239.5
Property, plant and equipment, gross	12,544.9	12,488.1
Less—accumulated depreciation and amortization	4,037.0	3,947.0
Property, plant and equipment, net	8,507.9	8,541.1
Other Assets:
Goodwill	237.4	237.4
Gas stored underground	95.3	114.0
Other	178.3	179.6
Total other assets	511.0	531.0
Total Assets	9,623.7	9,331.4
Payables:
Trade	38.8	31.1
Affiliates	4.2	1.7
Other	12.9	20.3
Gas transportation payables	12.8	20.0
Accrued taxes, other	41.0	65.8
Accrued interest	41.7	32.7
Accrued payroll and employee benefits	21.6	37.4
Construction retainage	14.4	16.6
Current portion of long-term debt	300.0	0.0
Other current liabilities	36.5	34.1
Total current liabilities	523.9	259.7
Long-term debt and finance lease obligation	3,230.5	3,334.5
Other Liabilities and Deferred Credits:
Pension liability	4.9	5.6
Asset retirement obligations	62.0	61.5
Provision for other asset retirement	89.3	88.2
Other	118.3	112.8
Total other liabilities and deferred credits	274.5	268.1
Commitments and Contingencies
Partners' Capital:
Partners' capital	5,666.9	5,541.7
Accumulated other comprehensive loss	(72.1)	(72.6)
Total partners' capital	5,594.8	5,469.1
Total Liabilities and Partners' Capital	$ 9,623.7	$ 9,331.4