CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Current Assets:
Cash and cash equivalents	$ 13.7	$ 3.6
Receivables:
Trade, net	101.5	139.2
Other	12.0	14.5
Gas transportation receivables	8.4	8.8
Costs recoverable from customers	6.4	23.6
Prepayments	22.1	21.3
Other current assets	9.9	1.3
Total current assets	174.0	212.3
Property, Plant and Equipment:
Natural gas transmission and other plant	11,402.7	11,175.4
Construction work in progress	202.8	150.2
Property, plant and equipment, gross	11,605.5	11,325.6
Less—accumulated depreciation and amortization	3,178.6	2,939.8
Property, plant and equipment, net	8,426.9	8,385.8
Other Assets:
Goodwill	237.4	237.4
Gas stored underground	90.9	68.6
Other	159.3	144.6
Total other assets	487.6	450.6
Total Assets	9,088.5	9,048.7
Payables:
Trade	77.2	61.2
Affiliates	3.6	0.5
Other	13.9	9.9
Gas payables	8.6	8.2
Accrued taxes, other	78.9	58.6
Accrued interest	44.6	38.1
Accrued payroll and employee benefits	29.0	34.0
Construction retainage	13.4	20.4
Deferred income	1.2	0.5
Other current liabilities	24.5	26.0
Total current liabilities	294.9	257.4
Long-term debt and finance lease obligation	3,529.9	3,701.3
Other Liabilities and Deferred Credits:
Pension liability	21.8	24.8
Asset retirement obligation	58.3	56.4
Provision for other asset retirement	73.4	68.5
Other	95.1	78.4
Total other liabilities and deferred credits	248.6	228.1
Commitments and Contingencies
Partners’ Capital:
Partners' capital	5,096.7	4,947.1
Accumulated other comprehensive loss	(81.6)	(85.2)
Total partners’ capital	5,015.1	4,861.9
Total Liabilities and Partners' Capital	$ 9,088.5	$ 9,048.7