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REVENUE REVENUE (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2018
Revenue, Initial Application Period Cumulative Effect Transition [Line Items] |
Revenue, Initial Application Period Cumulative Effect Transition [Table Text Block] | The impact on our Consolidated Income Statement and Balance Sheet is as follows (in thousands):
|  | Three Months Ended June 30, 2018
Income Statement |  | As Reported |  | Balance Without Adoption of Topic 606 |  | Effect of Change Increase/(Decrease)
Services revenue |  | $ | 285,267 |  |  | $ | 644,615 |  |  | $ | (359,348 | )
Cost of sales and fuel (exclusive of depreciation and operating costs) |  | $ | 2,175,818 |  |  | $ | 2,523,916 |  |  | $ | (348,098 | )
Depreciation and amortization |  | $ | 106,288 |  |  | $ | 106,142 |  |  | $ | 146 |
Income taxes |  | $ | 87,531 |  |  | $ | 90,151 |  |  | $ | (2,620 | )
Net income |  | $ | 282,179 |  |  | $ | 290,955 |  |  | $ | (8,776 | )
Net income attributable to noncontrolling interests |  | $ | 1,131 |  |  | $ | 1,128 |  |  | $ | 3 |
Net income attributable to ONEOK |  | $ | 281,048 |  |  | $ | 289,827 |  |  | $ | (8,779 | )
|  | Six Months Ended June 30, 2018
Income Statement |  | As Reported |  | Balance Without Adoption of Topic 606 |  | Effect of Change Increase/(Decrease)
Services revenue |  | $ | 567,340 |  |  | $ | 1,278,930 |  |  | $ | (711,590 | )
Cost of sales and fuel (exclusive of depreciation and operating costs) |  | $ | 4,543,844 |  |  | $ | 5,249,690 |  |  | $ | (705,846 | )
Depreciation and amortization |  | $ | 210,525 |  |  | $ | 210,234 |  |  | $ | 291 |
Income taxes |  | $ | 163,302 |  |  | $ | 164,690 |  |  | $ | (1,388 | )
Net income |  | $ | 548,228 |  |  | $ | 552,875 |  |  | $ | (4,647 | )
Net income attributable to noncontrolling interests |  | $ | 2,672 |  |  | $ | 2,667 |  |  | $ | 5 |
Net income attributable to ONEOK |  | $ | 545,556 |  |  | $ | 550,208 |  |  | $ | (4,652 | )
|  | June 30, 2018
Balance Sheet |  | As Reported |  | Balance Without Adoption of Topic 606 |  | Effect of Change Increase/(Decrease)
Accounts receivable, net |  | $ | 934,664 |  |  | $ | 1,056,974 |  |  | $ | (122,310 | )
Natural gas and natural gas liquids in storage |  | $ | 285,776 |  |  | $ | 299,616 |  |  | $ | (13,840 | )
Other current assets |  | $ | 57,286 |  |  | $ | 56,230 |  |  | $ | 1,056 |
Property, plant and equipment |  | $ | 16,363,716 |  |  | $ | 16,341,524 |  |  | $ | 22,192 |
Accumulated depreciation and amortization |  | $ | 3,059,799 |  |  | $ | 3,058,136 |  |  | $ | 1,663 |
Deferred income taxes |  | $ | 31,503 |  |  | $ | 30,617 |  |  | $ | 886 |
Other assets |  | $ | 170,124 |  |  | $ | 165,130 |  |  | $ | 4,994 |
Accounts payable |  | $ | 1,027,467 |  |  | $ | 1,149,777 |  |  | $ | (122,310 | )
Other current liabilities |  | $ | 184,127 |  |  | $ | 182,577 |  |  | $ | 1,550 |
Other deferred credits |  | $ | 357,184 |  |  | $ | 342,162 |  |  | $ | 15,022 |
Retained earnings/paid-in capital |  | $ | 7,699,934 |  |  | $ | 7,702,903 |  |  | $ | (2,969 | )
Noncontrolling interests in consolidated subsidiaries |  | $ | 173,623 |  |  | $ | 173,601 |  |  | $ | 22 |
Contract with Customer, Asset and Liability[Table Text Block] |
Contract Assets |  | (Millions of dollars)
Balance at January 1, 2018 (a) |  | $ | 6.4 |
Amounts invoiced in excess of revenue recognized |  | (0.4 | )
Net additions |  | 0.4 |
Balance at June 30, 2018 (b) |  | $ | 6.4 |
(a) - Balance includes $0.9 million of current assets. (b) - Contract assets of $1.4 million and $5.0 million are included in other current assets and other assets, respectively, in our Consolidated Balance Sheet
Contract Liabilities |  | (Millions of dollars)
Balance at January 1, 2018 (a) |  | $ | 33.3 |
Revenue recognized included in beginning balance |  | (18.3 | )
Net additions |  | 27.8 |
Balance at June 30, 2018 (b) |  | $ | 42.8 |
(a) - Balance includes $19.5 million of current liabilities. (b) - Contract liabilities of $27.8 million and $15.0 million are included in other current liabilities and other deferred credits, respectively, in our Consolidated Balance Sheet.
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block] | The following table presents aggregate value allocated to unsatisfied performance obligations as of June 30, 2018, and the amounts we expect to recognize in revenue in future periods, related primarily to firm transportation and storage contracts with remaining contract terms ranging from one month to 26 years:
Expected Period of Recognition in Revenue |  | (Millions of dollars)
Remainder of 2018 |  | $ | 168.5 |
2019 |  | 271.6 |
2020 |  | 226.1 |
2021 |  | 219.2 |
2022 and beyond |  | 1,066.7 |
Total estimated transaction price allocated to unsatisfied performance obligations |  | $ | 1,952.1 |

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