2.0.0.10falsePARTNERS' EQUITY006060 - Disclosure - PARTNERS' EQUITYtruefalsefalsefalse1usd$falsefalseu000Standardhttp://www.xbrl.org/2003/iso4217USDiso42170u001Standardhttp://www.xbrl.org/2003/instancesharesxbrli0u002Dividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instancesharesxbrli020oks_NotesToFinancialStatementsAbstractoksfalsenadurationstringNo definition available.falsefalsefalsefalsefalsetruefalsefalsefalsefalsefalsefalse1falsefalsefalsefalse00falsefalsefalseNo definition available.false31us-gaap_PartnersCapitalNotesDisclosureTextBlockus-gaaptruenadurationstringNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalsefalse00<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">F.           PARTNERS’ EQUITY</font></div><div style="DISPLAY: block; TEXT-INDENT: 0pt"><br /></div><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; FONT-WEIGHT: bold">ONEOK </font>-<font style="DISPLAY: inline; FONT-WEIGHT: bold"> </font>ONEOK and its affiliates owned all of the Class B units, 5.9 million common units and the entire 2 percent general partner interest in us, which together constituted a 42.8 percent ownership interest in us at March 31, 2010.</font></div><div style="DISPLAY: block; TEXT-INDENT: 0pt"><br /></div><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; FONT-WEIGHT: bold">Equity Issuance</font> - In February 2010, we completed an underwritten public offering of 5,500,900 common units, including the partial exercise by the underwriters of their over-allotment option, at a public offering price of $60.75 per common unit, generating net proceeds of approximately $322.7 million.  In conjunction with the offering, ONEOK Partners GP contributed $6.8 million in order to maintain its 2 percent general partner interest in us.  We used the proceeds from the sale of common units and the general partner contribution to repay borrowings under our Partnership Credit Agreement and for general partnership purposes.</font></div><div style="DISPLAY: block; TEXT-INDENT: 0pt"><br /></div><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><font style="DISPLAY: inline; FONT-WEIGHT: bold">Cash Distributions</font> - Cash distributions paid to our general partner of $26.0 million and $22.7 million in the three months ended March 31, 2010 and 2009, respectively, included incentive distributions of $23.4 million and $20.3 million, respectively.</font></div><div style="DISPLAY: block; TEXT-INDENT: 0pt"><br /></div><div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">In April 2010, our general partner declared a cash distribution of $1.11 per unit ($4.44 per unit on an annualized basis) for the first quarter of 2010, an increase of $0.01 from the previous quarter, which will be paid on May 14, 2010, to unitholders of record at the close of business on April 30, 2010.</font></div>F.           PARTNERS’ EQUITYONEOK - ONEOK and its affiliates owned all of the Class B units,falsefalsefalseDescribes the formation, structure, control and ownership of the partnership. Disclosures related to accounts comprising partners' capital. Includes balances of general partners' capital account, limited partners' capital account, preferred partners' capital account and total partners' capital account and units outstanding; accumulated other comprehensive income; amount and nature of changes to amount of partner's capital and units outstanding by class, rights and privileges for each class of units; distribution policies and distributions paid by unit class; impact of and correction of an error in previously issued financial statements; limitations of partners' liability; redemption, conversion and distribution policies; and deferred compensation related to the issuance of units.Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 87-21
Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Practice Bulletin (PB)
-Number 14
-Paragraph 10, 15
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