XML 118 R72.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2

SEGMENTS (Details) - USD ($) $ in Thousands	3 Months Ended									12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Segment Reporting, Disclosure of Major Customers										For the year ended December 31, 2019, we had no single customer from which we received 10% or more of our consolidated revenues.	For the year ended December 31, 2018, we had no single customer from which we received 10% or more of our consolidated revenues.	For the year ended December 31, 2017, we had no single customer from which we received 10% or more of our consolidated revenues.
Total revenues	$ 2,663,606	$ 2,263,228	$ 2,457,575	$ 2,779,958	$ 3,136,700	$ 3,393,890	$ 2,960,529	$ 3,102,077		$ 10,164,367	$ 12,593,196	$ 12,173,907
Cost of sales and fuel (exclusive of depreciation and operating costs)										(6,788,040)	(9,422,708)	(9,538,045)
Operating costs										(982,864)	(907,068)	(822,710)
Equity in net earnings from investments										154,541	158,383	159,278
Depreciation and amortization										(476,535)	(428,557)	(406,335)
Asset Impairment Charges										0	0	(20,240)
Investments in unconsolidated affiliates	861,844				969,150					861,844	969,150	1,003,156
Noncash compensation expense										26,699	37,954	13,421
Total assets	21,812,121				18,231,671					21,812,121	18,231,671	16,845,937
Capital expenditures										3,848,349	2,141,475	512,393
Operating income	487,314	482,151	476,146	468,742	471,865	495,534	448,366	419,699		1,914,353	1,835,464	1,391,771
Net income	320,251	$ 309,155	$ 311,963	$ 337,208	292,888	$ 313,916	$ 282,179	$ 266,049		1,278,577	1,155,032	593,519
Interest expense, net of capitalized interest										491,773	469,620	485,658
Income taxes										372,414	362,903	447,282
Other corporate costs and noncash items										(68,767)	(15,603)	46,774
Noncash Contribution Expense										0	0	12,600
Business Combination, Acquisition Related Costs												30,000
Series E Preferred Stock [Member]
Segment Reporting Information [Line Items]
Noncash Contribution Expense									$ 20,000			20,000
Natural Gas Gathering And Processing
Segment Reporting Information [Line Items]
Total revenues										2,368,639	3,034,577	3,026,574
Cost of sales and fuel (exclusive of depreciation and operating costs)										(1,302,310)	(2,041,448)	(2,216,355)
Operating costs										(368,352)	(368,939)	(307,376)
Equity in net earnings from investments										(6,292)	410	12,098
Noncash compensation expense and other										10,965	7,007	3,531
Segment adjusted EBITDA										702,650	631,607	518,472
Depreciation and amortization										(219,519)	(196,090)	(184,923)
Asset Impairment Charges												(20,240)
Investments in unconsolidated affiliates	34,426				42,630					34,426	42,630	55,841
Total assets	6,795,744				6,078,473					6,795,744	6,078,473	5,495,163
Capital expenditures										926,489	694,611	284,205
Natural Gas Gathering And Processing | Natural Gas Gathering and Processing Intersegment [Member]
Segment Reporting Information [Line Items]
Total revenues										1,200,000	1,800,000
Natural Gas Liquids
Segment Reporting Information [Line Items]
Total revenues										8,532,516	10,934,578	10,626,204
Cost of sales and fuel (exclusive of depreciation and operating costs)										(6,690,918)	(9,176,813)	(9,176,494)
Operating costs										(456,892)	(394,115)	(358,278)
Equity in net earnings from investments										65,123	67,126	59,876
Noncash compensation expense and other										15,936	9,829	3,631
Segment adjusted EBITDA										1,465,765	1,440,605	1,154,939
Depreciation and amortization										(196,132)	(174,007)	(167,277)
Asset Impairment Charges												0
Investments in unconsolidated affiliates	439,393				451,040					439,393	451,040	457,467
Total assets	12,551,476				9,663,640					12,551,476	9,663,640	8,782,700
Capital expenditures										2,796,604	1,306,341	114,267
Natural Gas Liquids | Natural Gas Liquids Regulated [Member]
Segment Reporting Information [Line Items]
Total revenues										1,400,000	1,200,000	1,200,000
Cost of sales and fuel (exclusive of depreciation and operating costs)										(496,800)	(506,000)	(497,400)
Natural Gas Pipelines
Segment Reporting Information [Line Items]
Total revenues										471,987	431,735	419,932
Cost of sales and fuel (exclusive of depreciation and operating costs)										(4,628)	(15,984)	(43,424)
Operating costs										(157,230)	(144,259)	(125,308)
Equity in net earnings from investments										95,710	90,847	87,304
Noncash compensation expense and other										2,977	3,912	1,314
Segment adjusted EBITDA										408,816	366,251	339,818
Depreciation and amortization										(57,250)	(55,118)	(51,025)
Asset Impairment Charges												0
Investments in unconsolidated affiliates	388,025				475,480					388,025	475,480	489,848
Total assets	2,094,072				2,131,669					2,094,072	2,131,669	2,055,020
Capital expenditures										99,221	119,185	95,564
Natural Gas Pipelines | Natural Gas Pipelines Regulated [Member]
Segment Reporting Information [Line Items]
Total revenues										285,300	266,600	264,900
Cost of sales and fuel (exclusive of depreciation and operating costs)										(20,000)	(26,000)	(44,000)
Total Segments [Member]
Segment Reporting Information [Line Items]
Total revenues										11,373,142	14,400,890	14,072,710
Cost of sales and fuel (exclusive of depreciation and operating costs)										(7,997,856)	(11,234,245)	(11,436,273)
Operating costs										(982,474)	(907,313)	(790,962)
Equity in net earnings from investments										154,541	158,383	159,278
Noncash compensation expense and other										29,878	20,748	8,476
Segment adjusted EBITDA										2,577,231	2,438,463	2,013,229
Depreciation and amortization										(472,901)	(425,215)	(403,225)
Asset Impairment Charges												(20,240)
Investments in unconsolidated affiliates	861,844				969,150					861,844	969,150	1,003,156
Total assets	21,441,292				17,873,782					21,441,292	17,873,782	16,332,883
Capital expenditures										3,822,314	2,120,137	494,036
Other and Eliminations
Segment Reporting Information [Line Items]
Total revenues										(1,208,775)	(1,807,694)	(1,898,803)
Cost of sales and fuel (exclusive of depreciation and operating costs)										1,209,816	1,811,537	1,898,228
Operating costs										(390)	245	(31,748)
Equity in net earnings from investments										0	0	0
Depreciation and amortization										(3,634)	(3,342)	(3,110)
Asset Impairment Charges												0
Investments in unconsolidated affiliates	0				0					0	0	0
Total assets	$ 370,829				$ 357,889					370,829	357,889	513,054
Capital expenditures										26,035	21,338	18,357
Unaffiliated entity [Member]
Segment Reporting Information [Line Items]
Total revenues												12,173,907
Unaffiliated entity [Member] | Natural Gas Gathering And Processing
Segment Reporting Information [Line Items]
Total revenues												1,750,655
Unaffiliated entity [Member] | Natural Gas Liquids
Segment Reporting Information [Line Items]
Total revenues												10,009,576
Unaffiliated entity [Member] | Natural Gas Pipelines
Segment Reporting Information [Line Items]
Total revenues												411,490
Unaffiliated entity [Member] | Total Segments [Member]
Segment Reporting Information [Line Items]
Total revenues												12,171,721
Unaffiliated entity [Member] | Other and Eliminations
Segment Reporting Information [Line Items]
Total revenues												2,186
Intersegment [Member]
Segment Reporting Information [Line Items]
Total revenues												0
Intersegment [Member] | Natural Gas Gathering And Processing
Segment Reporting Information [Line Items]
Total revenues												1,275,919
Intersegment [Member] | Natural Gas Liquids
Segment Reporting Information [Line Items]
Total revenues												616,628
Intersegment [Member] | Natural Gas Liquids | Natural Gas Liquids Regulated [Member]
Segment Reporting Information [Line Items]
Total revenues										1,200,000	1,100,000	1,000,000
Intersegment [Member] | Natural Gas Pipelines
Segment Reporting Information [Line Items]
Total revenues												8,442
Intersegment [Member] | Total Segments [Member]
Segment Reporting Information [Line Items]
Total revenues												1,900,989
Intersegment [Member] | Other and Eliminations
Segment Reporting Information [Line Items]
Total revenues												$ (1,900,989)
Noncustomer [Domain]
Segment Reporting Information [Line Items]
Total revenues										139,600	(16,200)
NGL and Condensate Sales [Member]
Segment Reporting Information [Line Items]
Total revenues										7,944,787	10,301,496
NGL and Condensate Sales [Member] | Natural Gas Gathering And Processing
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										1,224,378	1,775,991
NGL and Condensate Sales [Member] | Natural Gas Liquids
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										7,910,833	10,319,847
NGL and Condensate Sales [Member] | Natural Gas Pipelines
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										0	0
NGL and Condensate Sales [Member] | Total Segments [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										9,135,211	12,095,838
NGL and Condensate Sales [Member] | Other and Eliminations
Segment Reporting Information [Line Items]
Total revenues										(1,190,424)	(1,794,342)
Residue Natural Gas Sales [Member]
Segment Reporting Information [Line Items]
Total revenues										965,975	1,091,102
Residue Natural Gas Sales [Member] | Natural Gas Gathering And Processing
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										966,149	1,084,162
Residue Natural Gas Sales [Member] | Natural Gas Liquids
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										0	0
Residue Natural Gas Sales [Member] | Natural Gas Pipelines
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										1,244	9,772
Residue Natural Gas Sales [Member] | Total Segments [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										967,393	1,093,934
Residue Natural Gas Sales [Member] | Other and Eliminations
Segment Reporting Information [Line Items]
Total revenues										(1,418)	(2,832)
Gathering and Exchange Services Revenue [Member]
Segment Reporting Information [Line Items]
Total revenues										578,537	568,070
Gathering and Exchange Services Revenue [Member] | Natural Gas Gathering And Processing
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										164,299	163,194
Gathering and Exchange Services Revenue [Member] | Natural Gas Liquids
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										414,238	404,897
Gathering and Exchange Services Revenue [Member] | Natural Gas Pipelines
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										0	0
Gathering and Exchange Services Revenue [Member] | Total Segments [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										578,537	568,091
Gathering and Exchange Services Revenue [Member] | Other and Eliminations
Segment Reporting Information [Line Items]
Total revenues										0	(21)
Transportation and Storage Revenue [Member]
Segment Reporting Information [Line Items]
Total revenues										648,103	603,437
Transportation and Storage Revenue [Member] | Natural Gas Gathering And Processing
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										0	0
Transportation and Storage Revenue [Member] | Natural Gas Liquids
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										197,483	199,018
Transportation and Storage Revenue [Member] | Natural Gas Pipelines
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										466,266	414,969
Transportation and Storage Revenue [Member] | Total Segments [Member]
Segment Reporting Information [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax										663,749	613,987
Transportation and Storage Revenue [Member] | Other and Eliminations
Segment Reporting Information [Line Items]
Total revenues										(15,646)	(10,550)
Other [Member]
Segment Reporting Information [Line Items]
Total revenues										26,965	29,091
Other [Member] | Natural Gas Gathering And Processing
Segment Reporting Information [Line Items]
Total revenues										13,813	11,230
Other [Member] | Natural Gas Liquids
Segment Reporting Information [Line Items]
Total revenues										9,962	10,816
Other [Member] | Natural Gas Pipelines
Segment Reporting Information [Line Items]
Total revenues										4,477	6,994
Other [Member] | Total Segments [Member]
Segment Reporting Information [Line Items]
Total revenues										28,252	29,040
Other [Member] | Other and Eliminations
Segment Reporting Information [Line Items]
Total revenues										$ (1,287)	$ 51

X

- Definition

Net income adjusted for interest expense, depreciation and amortization, noncash impairment charges, income taxes and AFUDC and other noncash items.

+ References

No definition available.

+ Details

Name:	oke_AdjustedEBITDA
Namespace Prefix:	oke_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Sum of various corporate costs and noncash Items

+ References

No definition available.

+ Details

Name:	oke_OtherCorporateCostsandNoncashItems
Namespace Prefix:	oke_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity and Other

+ References

No definition available.

+ Details

Name:	oke_PublicUtilitiesAllowanceforFundsUsedDuringConstructionCapitalizedCostofEquityandOther
Namespace Prefix:	oke_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=109226348&loc=d3e2420-110228

+ Details

Name:	us-gaap_AssetImpairmentCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(11))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(12))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

+ Details

Name:	us-gaap_Assets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e1043-128460

+ Details

Name:	us-gaap_BusinessCombinationAcquisitionRelatedCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The aggregate cost of goods produced and sold and services rendered during the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2)
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

+ Details

Name:	us-gaap_CostOfRevenue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585

+ Details

Name:	us-gaap_DepreciationDepletionAndAmortization
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The aggregate direct operating costs incurred during the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2)
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

+ Details

Name:	us-gaap_DirectOperatingCosts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of noncash expense (reversal of expense) for employee benefits and share-based payment arrangement. Includes, but is not limited to, pension, other postretirement, postemployment and termination benefits.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585

+ Details

Name:	us-gaap_EmployeeBenefitsAndShareBasedCompensationNoncash
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=109237563&loc=d3e33749-111570

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 25
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8813-108599

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_EquityMethodInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Amount of income (loss) for proportionate share of equity method investee's income (loss).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(12))
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(10))
-URI http://asc.fasb.org/extlink&oid=116637232&loc=SL114874131-224263

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(13)(f))
-URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=109237563&loc=d3e33749-111570

+ Details

Name:	us-gaap_IncomeLossFromEquityMethodInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 20
-Section 45
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109238882&loc=d3e38679-109324

+ Details

Name:	us-gaap_IncomeTaxExpenseBenefit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of the cost of borrowed funds accounted for as interest expense.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28555-108399

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (210.5-03(11))
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.9)
-URI http://asc.fasb.org/extlink&oid=116637391&loc=SL114874048-224260

+ Details

Name:	us-gaap_InterestExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Noncash charitable contributions made by the entity during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585

+ Details

Name:	us-gaap_NoncashContributionExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The net result for the period of deducting operating expenses from operating revenues.

+ References

No definition available.

+ Details

Name:	us-gaap_OperatingIncomeLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585

+ Details

Name:	us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 1A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669619-108580

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 1B
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669625-108580

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 6: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 55
-Paragraph 4J
-URI http://asc.fasb.org/extlink&oid=116874947&loc=SL4591551-111686

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3000-108585

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 45
-Paragraph 19
-URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4569616-111683

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599

Reference 10: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 55
-Paragraph 4K
-URI http://asc.fasb.org/extlink&oid=116874947&loc=SL4591552-111686

+ Details

Name:	us-gaap_ProfitLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

+ Details

Name:	us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(1))
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

+ Details

Name:	us-gaap_Revenues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Disclosure of the extent of enterprise reliance on its major customers. For example, includes revenues from transactions with a single external customer amounting to 10 percent or more of the entity's revenues, the total amount of revenues from each such customer, and the identity of the segment or segments reporting the revenues. A group of entities that the entity knows to be under common control generally will be considered a single customer for inclusion in this item. The federal government, a state government, a local government (for example, a county or municipality), or a foreign government each will generally be considered as a single customer for inclusion in this item.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e9054-108599

+ Details

Name:	us-gaap_SegmentReportingDisclosureOfMajorCustomers
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_SegmentReportingInformationLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_SeriesEPreferredStockMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=oke_NaturalGasGatheringAndProcessingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	oke_IntersegmentRevenuesbyNameAxis=oke_NaturalGasGatheringandProcessingIntersegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=oke_NaturalGasLiquidsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	oke_RegulatedSegmentByNameAxis=oke_NaturalGasLiquidsRegulatedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=oke_NaturalGasPipelinesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	oke_RegulatedSegmentByNameAxis=oke_NaturalGasPipelinesRegulatedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=oke_TotalSegmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=us-gaap_IntersegmentEliminationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MajorCustomersAxis=oke_UnaffiliatedentityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MajorCustomersAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_MajorCustomersAxis=oke_NoncustomerDomain
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=oke_NGLandCondensateSalesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=oke_ResidueNaturalGasSalesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=oke_GatheringandExchangeServicesRevenueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=oke_TransportationandStorageRevenueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=oke_OtherMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: