v3.5.0.2
Condensed Consolidating Financial Statements Condensed Consolidating Statements of Comprehensive Income (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Condensed Income Statements, Captions [Line Items]          
Net income $ 363 $ 289 $ 740 $ 612 $ 1,295
Other comprehensive income (loss):          
Foreign currency translation adjustments (125) 56 (199) 19  
Change in fair value of available-for-sale-securities 75 31 129 (39)  
Other comprehensive loss (50) 85 (70) (22) $ (142)
Comprehensive Income (Loss), Affiliates 0 0 0 0  
Comprehensive income 313 374 670 590  
Comprehensive income attributable to non-controlling interests (6) (6) (14) (14)  
Comprehensive income attributable to ICE Group, Inc. 307 368 656 576  
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax   (2) 0 (2)  
Guarantor Subsidiaries [Member]          
Condensed Income Statements, Captions [Line Items]          
Net income 328 87 619 154  
Other comprehensive income (loss):          
Foreign currency translation adjustments 0 0 0 1  
Change in fair value of available-for-sale-securities 0 0 0 0  
Other comprehensive loss 0 0 0 1  
Comprehensive Income (Loss), Affiliates (28) 13 (18) (14)  
Comprehensive income 300 100 601 141  
Comprehensive income attributable to non-controlling interests 0 0 0 0  
Comprehensive income attributable to ICE Group, Inc. 300 100 601 141  
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax   0   0  
Parent Company [Member]          
Condensed Income Statements, Captions [Line Items]          
Net income 357 283 726 598  
Other comprehensive income (loss):          
Foreign currency translation adjustments 0 0 0 0  
Change in fair value of available-for-sale-securities 0 0 0 0  
Other comprehensive loss 0 0 0 0  
Comprehensive Income (Loss), Affiliates (50) 85 (70) (22)  
Comprehensive income 307 368 656 576  
Comprehensive income attributable to non-controlling interests 0 0 0 0  
Comprehensive income attributable to ICE Group, Inc. 307 368 656 576  
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax   0   0  
Non-Guarantor Subsidiaries [Member]          
Condensed Income Statements, Captions [Line Items]          
Net income 404 291 822 634  
Other comprehensive income (loss):          
Foreign currency translation adjustments (125) 56 (199) 18  
Change in fair value of available-for-sale-securities 75 31 129 (39)  
Other comprehensive loss (50) 85 (70) (23)  
Comprehensive Income (Loss), Affiliates 0 0 0 0  
Comprehensive income 354 376 752 611  
Comprehensive income attributable to non-controlling interests (6) (6) (14) (14)  
Comprehensive income attributable to ICE Group, Inc. 348 370 738 597  
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax   (2)   (2)  
Consolidation, Eliminations [Member]          
Condensed Income Statements, Captions [Line Items]          
Net income (726) (372) (1,427) (774)  
Other comprehensive income (loss):          
Foreign currency translation adjustments 0 0 0 0  
Change in fair value of available-for-sale-securities 0 0 0 0  
Other comprehensive loss 0 0 0 0  
Comprehensive Income (Loss), Affiliates 78 (98) 88 36  
Comprehensive income (648) (470) (1,339) (738)  
Comprehensive income attributable to non-controlling interests 0 0 0 0  
Comprehensive income attributable to ICE Group, Inc. $ (648) (470) $ (1,339) (738)  
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Tax   $ 0   $ 0