Balance Sheets - USD ($) $ in Millions		Mar. 31, 2018	Dec. 31, 2017	[1]
Current Assets
Cash and cash equivalents		$ 1.5	$ 6.7
Customer receivables (less allowance for doubtful accounts of $2.6 and $1.7)		184.2	171.7
Other receivables		4.9	2.1
Affiliated receivables		0.9	1.5
Inventories at lower of average cost or market:
Gas stored		9.1	52.9
Materials and supplies		31.6	25.2
Prepayments		2.9	3.9
Regulatory assets		4.8	16.6
Other	[2]	1.7	1.4
Total current assets		241.6	282.0
Property, Plant and Equipment
Property, plant and equipment		3,078.6	3,041.7
Accumulated depreciation and amortization		(758.5)	(745.8)
Total property, plant and equipment, net		2,320.1	2,295.9
Deferred Charges and Other Assets
Pension and other postretirement benefit assets	[2]	108.2	107.1
Other		16.6	12.8
Total deferred charges and other assets		124.8	119.9
Total assets		2,686.5	2,697.8
Current Liabilities
Securities due within one year		50.0	120.0
Short-term debt		134.8	165.0
Affiliated current borrowings		33.9	75.0
Accounts payable		47.0	53.8
Accrued interest, payroll and taxes		23.8	15.6
Payables to affiliates		99.0	68.3
Regulatory liabilities		50.9	9.9
Contract liabilities		9.9	17.3
Other		34.4	27.2
Total current liabilities		483.7	552.1
Long-Term Debt		596.0	595.9
Deferred Credits and Other Liabilities
Deferred income taxes		263.9	276.1
Regulatory liabilities		448.2	441.0
Other	[2]	110.5	107.6
Total deferred credits and other liabilities		822.6	824.7
Total liabilities		1,902.3	1,972.7
Commitments and Contingencies (see Note 11)
Equity
Common stock - par value $2.50	[3]	23.0	23.0
Additional paid-in capital		272.5	272.5
Retained earnings		488.7	429.6
Total common shareholder's equity		784.2	725.1
Total liabilities and shareholder's equity		$ 2,686.5	$ 2,697.8

[1] Questar Gas’ Balance Sheet at December 31, 2017 has been derived from the audited Balance Sheet at that date.

[2] See Note 13 for amounts attributable to related parties.

[3] 50.0 million shares authorized; 9.2 million shares outstanding at March 31, 2018 and December 31, 2017.