XML 61 R50.htm IDEA: XBRL DOCUMENT v3.10.0.1
REVENUE REVENUE (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Jan. 01, 2018
Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]            
Retained earnings increase $ 0   $ 0     $ 0
Commodity sales 3,083,625,000 $ 2,322,534,000 8,578,891,000 $ 6,700,260,000    
Services revenue 310,265,000 583,832,000 877,605,000 1,681,489,000    
Cost of sales and fuel (exclusive of depreciation and operating costs) 2,560,765,000 2,229,416,000 7,104,609,000 6,464,281,000    
Depreciation and amortization 107,383,000 102,298,000 317,908,000 302,566,000    
Income taxes 102,983,000 97,128,000 266,285,000 195,913,000    
Net income 313,916,000 166,531,000 862,144,000 528,707,000    
Net income attributable to noncontrolling interest 657,000 789,000 3,329,000 203,911,000    
Net income attributable to ONEOK 313,259,000 $ 165,742,000 858,815,000 $ 324,796,000    
Accounts receivable, net 1,085,075,000   1,085,075,000     1,202,951,000
Natural gas and natural gas liquids in storage 426,293,000   426,293,000     342,293,000
Other assets, current 61,340,000   61,340,000     53,008,000
Property, plant and equipment 17,120,187,000   17,120,187,000     15,559,667,000
Accumulated depreciation and amortization 3,159,660,000   3,159,660,000     2,861,541,000
Other assets 191,170,000   191,170,000     180,830,000
Accounts payable 1,339,507,000   1,339,507,000     1,140,571,000
Other current liabilities 208,312,000   208,312,000     179,971,000
Deferred income taxes 132,242,000   132,242,000     52,697,000
Other deferred credits 350,400,000   350,400,000     348,924,000
Retained earnings/paid-in capital 7,662,673,000   7,662,673,000     6,588,878,000
Noncontrolling interests in consolidated subsidiaries 0   0     157,485,000
Contract with Customer, Asset and Liability [Abstract]            
Accounts receivable, net 1,077,700,000   1,077,700,000     $ 1,200,000,000
Contract with customer, asset 7,700,000   7,700,000   $ 6,400,000  
Amounts invoiced in excess of revenue recognized 700,000.0   700,000.0      
Net additions 2,000,000.0   2,000,000.0      
Contract with customer, asset, net, current 2,900,000   2,900,000   900,000  
Contract with customer, asset, net, noncurrent 4,800,000   4,800,000      
Contract with customer, liability 38,300,000.0   38,300,000.0   33,300,000.0  
Revenue recognized included in beginning balance     (19,000,000.0)      
Net additions 24,000,000.0   24,000,000.0      
Contract with customer, liability, current 23,800,000   23,800,000   19,500,000  
Contract with customer, liability, noncurrent 14,500,000   14,500,000      
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]            
Revenue, Remaining Performance Obligation 1,960,100,000   1,960,100,000      
Calculated under Revenue Guidance in Effect before Topic 606 [Member]            
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]            
Commodity sales 3,129,947,000   8,625,213,000      
Services revenue 707,633,000   1,986,563,000      
Cost of sales and fuel (exclusive of depreciation and operating costs) 3,005,767,000   8,255,457,000      
Depreciation and amortization 107,238,000   317,472,000      
Income taxes 102,714,000   267,404,000      
Net income 313,018,000   865,893,000      
Net income attributable to noncontrolling interest 655,000   3,322,000      
Net income attributable to ONEOK 312,363,000   862,571,000      
Accounts receivable, net 1,214,627,000   1,214,627,000      
Natural gas and natural gas liquids in storage 439,035,000   439,035,000      
Other assets, current 60,198,000   60,198,000      
Property, plant and equipment 17,098,053,000   17,098,053,000      
Accumulated depreciation and amortization 3,157,852,000   3,157,852,000      
Other assets 186,417,000   186,417,000      
Accounts payable 1,469,059,000   1,469,059,000      
Other current liabilities 206,658,000   206,658,000      
Deferred income taxes 132,859,000   132,859,000      
Other deferred credits 335,909,000   335,909,000      
Retained earnings/paid-in capital 7,664,722,000   7,664,722,000      
Difference between Revenue Guidance in Effect before and after Topic 606 [Member]            
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]            
Commodity sales (46,322,000)   (46,322,000)      
Services revenue (397,368,000)   (1,108,958,000)      
Cost of sales and fuel (exclusive of depreciation and operating costs) (445,002,000)   (1,150,848,000)      
Depreciation and amortization 145,000   436,000      
Income taxes 269,000   (1,119,000)      
Net income 898,000   (3,749,000)      
Net income attributable to noncontrolling interest 2,000   7,000      
Net income attributable to ONEOK 896,000   (3,756,000)      
Accounts receivable, net (129,552,000)   (129,552,000)      
Natural gas and natural gas liquids in storage (12,742,000)   (12,742,000)      
Other assets, current 1,142,000   1,142,000      
Property, plant and equipment 22,134,000   22,134,000      
Accumulated depreciation and amortization 1,808,000   1,808,000      
Other assets 4,753,000   4,753,000      
Accounts payable (129,552,000)   (129,552,000)      
Other current liabilities 1,654,000   1,654,000      
Deferred income taxes (617,000)   (617,000)      
Other deferred credits 14,491,000   14,491,000      
Retained earnings/paid-in capital (2,049,000)   (2,049,000)      
2018 [Member]            
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]            
Revenue, Remaining Performance Obligation 90,500,000   90,500,000      
2019 [Member]            
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]            
Revenue, Remaining Performance Obligation 296,200,000   296,200,000      
2020 [Member]            
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]            
Revenue, Remaining Performance Obligation 245,100,000   245,100,000      
2021 [Member]            
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]            
Revenue, Remaining Performance Obligation 237,400,000   237,400,000      
Thereafter [Member]            
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]            
Revenue, Remaining Performance Obligation $ 1,090,900,000   $ 1,090,900,000      
Retained Earnings            
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]            
Retained earnings increase         $ 1,700,000