CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets
Cash and cash equivalents	$ 84,464	$ 37,193
Accounts receivable, net	1,085,075	1,202,951
Materials and supplies	128,574	90,301
Natural gas and natural gas liquids in storage	426,293	342,293
Commodity imbalances	22,162	38,712
Other current assets	61,340	53,008
Total current assets	1,807,908	1,764,458
Property, plant and equipment
Property, plant and equipment	17,120,187	15,559,667
Accumulated depreciation and amortization	3,159,660	2,861,541
Net property, plant and equipment	13,960,527	12,698,126
Investments and other assets
Investments in unconsolidated affiliates	981,592	1,003,156
Goodwill and intangible assets	970,117	993,460
Deferred income taxes	0	205,907
Other assets	191,170	180,830
Total investments and other assets	2,142,879	2,383,353
Total assets	17,911,314	16,845,937
Current liabilities
Current maturities of long-term debt (Note D)	507,650	432,650
Short-term borrowings (Note D)	120,000	614,673
Accounts payable	1,339,507	1,140,571
Commodity imbalances	162,990	164,161
Accrued interest	111,747	135,309
Other current liabilities	208,312	179,971
Total current liabilities	2,450,206	2,667,335
Long-term debt, excluding current maturities (Note D)	8,325,708	8,091,629
Deferred credits and other liabilities
Deferred income taxes	132,242	52,697
Other deferred credits	350,400	348,924
Total deferred credits and other liabilities	482,642	401,621
Commitments and contingencies (Note J)
Equity (Note E)
Preferred stock, $0.01 par value: issued 20,000 shares at September 30, 2018, and December 31, 2017	0	0
Common stock, $0.01 par value: authorized 1,200,000,000 shares, issued 445,016,234 shares and outstanding 411,358,838 shares at September 30, 2018; issued 423,166,234 shares and outstanding 388,703,543 shares at December 31, 2017	4,450	4,232
Paid-in Capital	7,662,673	6,588,878
Accumulated other comprehensive loss (Note F)	(158,138)	(188,530)
Retained Earnings	0	0
Treasury stock, at cost: 33,657,396 shares at September 30, 2018, and 34,462,691 shares at December 31, 2017	(856,227)	(876,713)
Total ONEOK Shareholders' Equity	6,652,758	5,527,867
Noncontrolling interests in consolidated subsidiaries	0	157,485
Total equity	6,652,758	5,685,352
Total liabilities and equity	$ 17,911,314	$ 16,845,937