XML 65 R54.htm IDEA: XBRL DOCUMENT v3.10.0.1
SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION, Comprehensive Income (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Condensed Financial Statements, Captions [Line Items]        
Net income $ 282,179 $ 175,991 $ 548,228 $ 362,176
Other comprehensive income (loss), net of tax        
Unrealized gains (losses) on derivatives, net of tax (20,269) (5,123) 14,255 19,333
Realized (gains) losses on derivatives in net income, net of tax (12,160) (9,927) (24,136) (27,210)
Change in pension and postretirement benefit plan liability, net of tax (3,235) (2,040) (5,850) (4,081)
Other comprehensive income (loss) on investments in unconsolidated affiliates, net of tax 977 (1,370) 3,801 (1,045)
Total other comprehensive income (loss), net of tax (3,897) 5,474 48,042 49,579
Comprehensive income 278,282 181,465 596,270 411,755
Less: Comprehensive income attributable to noncontrolling interests 1,131 106,507 2,672 234,148
Comprehensive income attributable to ONEOK 277,151 74,958 593,598 177,607
Reportable Legal Entities | Parent Issuer & Guarantor        
Condensed Financial Statements, Captions [Line Items]        
Net income 281,100 175,100 545,600 360,400
Other comprehensive income (loss), net of tax        
Unrealized gains (losses) on derivatives, net of tax 15,500 (300) 33,900 (300)
Realized (gains) losses on derivatives in net income, net of tax 1,000 500 1,900 1,000
Change in pension and postretirement benefit plan liability, net of tax 3,200 2,100 6,400 4,100
Other comprehensive income (loss) on investments in unconsolidated affiliates, net of tax 0 0 0 0
Total other comprehensive income (loss), net of tax 19,700 2,300 42,200 4,800
Comprehensive income 300,800 177,400 587,800 365,200
Less: Comprehensive income attributable to noncontrolling interests 0 105,600 0 232,400
Comprehensive income attributable to ONEOK 300,800 71,800 587,800 132,800
Reportable Legal Entities | Subsidiary Issuer & Guarantor        
Condensed Financial Statements, Captions [Line Items]        
Net income 403,200 278,500 774,100 547,600
Other comprehensive income (loss), net of tax        
Unrealized gains (losses) on derivatives, net of tax (46,400) (5,700) (25,500) 23,100
Realized (gains) losses on derivatives in net income, net of tax 14,600 11,100 28,900 30,900
Change in pension and postretirement benefit plan liability, net of tax 0 0 (600) 0
Other comprehensive income (loss) on investments in unconsolidated affiliates, net of tax 1,200 (1,600) 4,900 (1,200)
Total other comprehensive income (loss), net of tax (30,600) 3,800 7,700 52,800
Comprehensive income 372,600 282,300 781,800 600,400
Less: Comprehensive income attributable to noncontrolling interests 0 0 0 0
Comprehensive income attributable to ONEOK 372,600 282,300 781,800 600,400
Reportable Legal Entities | Guarantor Subsidiary        
Condensed Financial Statements, Captions [Line Items]        
Net income 403,200 278,500 774,100 547,600
Other comprehensive income (loss), net of tax        
Unrealized gains (losses) on derivatives, net of tax (46,400) 9,000 (25,500) 36,300
Realized (gains) losses on derivatives in net income, net of tax 10,200 6,800 21,800 22,100
Change in pension and postretirement benefit plan liability, net of tax 0 0 0 0
Other comprehensive income (loss) on investments in unconsolidated affiliates, net of tax 1,200 (1,600) 4,900 (1,200)
Total other comprehensive income (loss), net of tax (35,000) 14,200 1,200 57,200
Comprehensive income 368,200 292,700 775,300 604,800
Less: Comprehensive income attributable to noncontrolling interests 0 0 0 0
Comprehensive income attributable to ONEOK 368,200 292,700 775,300 604,800
Reportable Legal Entities | Combined Non-Guarantor Subsidiaries        
Condensed Financial Statements, Captions [Line Items]        
Net income 392,800 266,700 751,200 517,600
Other comprehensive income (loss), net of tax        
Unrealized gains (losses) on derivatives, net of tax (35,800) 9,800 (19,600) 32,800
Realized (gains) losses on derivatives in net income, net of tax 6,900 5,100 15,100 17,400
Change in pension and postretirement benefit plan liability, net of tax 0 0 0 0
Other comprehensive income (loss) on investments in unconsolidated affiliates, net of tax 1,000 (1,400) 3,800 (1,000)
Total other comprehensive income (loss), net of tax (27,900) 13,500 (700) 49,200
Comprehensive income 364,900 280,200 750,500 566,800
Less: Comprehensive income attributable to noncontrolling interests 1,100 900 2,600 1,800
Comprehensive income attributable to ONEOK 363,800 279,300 747,900 565,000
Reportable Legal Entities | Total        
Condensed Financial Statements, Captions [Line Items]        
Net income 282,200 176,000 548,200 362,200
Other comprehensive income (loss), net of tax        
Unrealized gains (losses) on derivatives, net of tax (20,300) (5,100) 14,300 19,300
Realized (gains) losses on derivatives in net income, net of tax 12,200 9,900 24,100 27,200
Change in pension and postretirement benefit plan liability, net of tax 3,200 2,100 5,800 4,100
Other comprehensive income (loss) on investments in unconsolidated affiliates, net of tax 1,000 (1,400) 3,800 (1,000)
Total other comprehensive income (loss), net of tax (3,900) 5,500 48,000 49,600
Comprehensive income 278,300 181,500 596,200 411,800
Less: Comprehensive income attributable to noncontrolling interests 1,100 106,500 2,600 234,200
Comprehensive income attributable to ONEOK 277,200 75,000 593,600 177,600
Consolidating Entries        
Condensed Financial Statements, Captions [Line Items]        
Net income (1,198,100) (822,800) (2,296,800) (1,611,000)
Other comprehensive income (loss), net of tax        
Unrealized gains (losses) on derivatives, net of tax 92,800 (17,900) 51,000 (72,600)
Realized (gains) losses on derivatives in net income, net of tax (20,500) (13,600) (43,600) (44,200)
Change in pension and postretirement benefit plan liability, net of tax 0 0 0 0
Other comprehensive income (loss) on investments in unconsolidated affiliates, net of tax (2,400) 3,200 (9,800) 2,400
Total other comprehensive income (loss), net of tax 69,900 (28,300) (2,400) (114,400)
Comprehensive income (1,128,200) (851,100) (2,299,200) (1,725,400)
Less: Comprehensive income attributable to noncontrolling interests 0 0 0 0
Comprehensive income attributable to ONEOK $ (1,128,200) $ (851,100) $ (2,299,200) $ (1,725,400)