STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Financing activities
Cash and cash equivalents at end of period	$ 1
Predecessor [Member]
Net income	99,195,000	96,509,000	86,758,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	144,758,000	130,150,000	132,212,000
Deferred income taxes	62,205,000	59,491,000	87,184,000
Provision for doubtful accounts	5,460,000	2,528,000	2,741,000
Changes in assets and liabilities:
Accounts receivable	(102,142,000)	10,016,000	(18,216,000)
Natural gas in storage	(63,139,000)	30,154,000	2,025,000
Asset removal costs	(46,567,000)	(47,658,000)	(35,438,000)
Affiliate payable	(8,140,000)	(7,229,000)	(683,000)
Accounts payable	37,241,000	(3,950,000)	(11,300,000)
Accrued taxes other than income	2,449,000	174,000	1,399,000
Customer deposits	(727,000)	(1,254,000)	(826,000)
Regulatory assets and liabilities	29,436,000	(59,338,000)	(33,804,000)
Other assets and liabilities	(5,821,000)	(13,006,000)	(19,262,000)
Cash provided by operating activities	154,208,000	196,587,000	192,790,000
Investing activities
Capital expenditures	(292,080,000)	(272,014,000)	(240,996,000)
Proceeds from sale of assets	1,327,000	1,462,000	195,000
Cash used in investing activities	(290,753,000)	(270,552,000)	(240,801,000)
Financing activities
Increase in short-term notes payable to ONEOK, net	150,851,000	58,692,000	74,975,000
Borrowings on long-term line of credit with ONEOK	0	115,235,000	155,974,000
Repayment of long-term debt	(206,000)	(330,000)	(305,000)
Distributions to ONEOK	(14,969,000)	(100,067,000)	(180,158,000)
Cash provided by financing activities	135,676,000	73,530,000	50,486,000
Change in cash and cash equivalents	(869,000)	(435,000)	2,475,000
Cash and cash equivalents at beginning of period	4,040,000	4,475,000	2,000,000
Cash and cash equivalents at end of period	3,171,000	4,040,000	4,475,000
Supplemental cash flow information:
Cash paid for interest, net of amounts capitalized	61,366,000	60,793,000	54,119,000
Cash paid to (received from) ONEOK for income taxes	$ 67,000	$ 360,000	$ 31,180,000