CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
Current Assets:
Cash and cash equivalents	$ 262.6	$ 20.1
Receivables:
Trade, net	169.7	204.6
Other	20.9	24.9
Gas transportation receivables	6.3	7.0
Prepayments	21.4	24.3
Short-term investments	509.7	0.0
Total current assets	1,014.1	288.7
Property, Plant and Equipment:
Property, plant and equipment, gross	13,697.9	13,529.5
Less—accumulated depreciation and amortization	4,867.5	4,672.9
Property, plant and equipment, net	8,830.4	8,856.6
Other Assets:
Goodwill	237.4	237.4
Gas stored underground	94.7	99.3
Other	225.4	214.4
Total other assets	557.5	551.1
Total Assets	10,402.0	9,696.4
Payables:
Trade	84.5	113.2
Gas transportation payables	8.3	7.8
Accrued taxes, other	63.8	67.9
Accrued interest	46.7	34.2
Accrued payroll and employee benefits	33.0	44.0
Current portion of long-term debt	599.6	0.0
Other current liabilities	68.6	75.4
Total current liabilities	919.1	362.3
Long-term debt and finance lease obligation	3,232.8	3,261.9
Other Liabilities and Deferred Credits:
Pension liability	4.4	4.7
Asset retirement obligations	59.9	59.2
Provision for other asset retirement	101.4	98.1
Other	131.0	119.1
Total other liabilities and deferred credits	296.7	281.1
Commitments and Contingencies
Partners' Capital:
Partners' capital	6,029.9	5,867.7
Accumulated other comprehensive loss	(76.5)	(76.6)
Total partners' capital	5,953.4	5,791.1
Total Liabilities and Partners' Capital	10,402.0	9,696.4
Affiliates
Receivables:
Other current assets	3.9	0.2
Payables:
Payables	8.1	3.4
Other
Receivables:
Other current assets	19.6	7.6
Payables:
Payables	6.5	16.4
Natural gas transmission and other plant
Property, Plant and Equipment:
Property, plant and equipment, gross	13,489.3	13,242.3
Construction work in progress
Property, Plant and Equipment:
Property, plant and equipment, gross	$ 208.6	$ 287.2