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Commitments and Contingencies Commitments and Contingencies Narrative (Details)
In Millions, unless otherwise specified |
0 Months Ended | 0 Months Ended | 6 Months Ended | 1 Months Ended | 0 Months Ended | 1 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Jun. 30, 2014
|
Apr. 18, 2014
Providence vs the Company [Member]
defendant
|
Jul. 02, 2014
Subsequent Event [Member]
Providence vs the Company [Member]
|
Jun. 04, 2014
NYSE BV Ownership Percentage in ATS [Member]
ATG ATS and NYSE BV Arbitration [Member]
|
Jun. 04, 2014
ATG Ownership Percentage in ATS [Member]
ATG ATS and NYSE BV Arbitration [Member]
|
Jun. 30, 2014
NYSE AMEX OPTIONS [Member]
|
Jun. 30, 2014
NYSE AMEX OPTIONS [Member]
USD ($)
|
May 31, 2014
Minimum [Member]
Harold Lanier vs the Company [Member]
suit
|
Jun. 04, 2014
Minimum [Member]
ATG ATS and NYSE BV Arbitration [Member]
USD ($)
|
Jun. 04, 2014
Minimum [Member]
ATG ATS and NYSE BV Arbitration [Member]
BRL
|
Jun. 30, 2014
NYSE AMEX OPTIONS [Member]
USD ($)
|
Jul. 31, 2014
NYSE AMEX OPTIONS [Member]
Subsequent Event [Member]
USD ($)
|
Jun. 30, 2014
NYSE AMEX OPTIONS [Member]
Subsequent Event [Member]
|
Jul. 31, 2013
NYSE AMEX OPTIONS [Member]
Subsequent Event [Member]
|
|
| Loss Contingencies [Line Items] | ||||||||||||||
| Loss contingency, number of defendants | 40 | |||||||||||||
| Period to File Amended, Consolidated Complaint | 60 days | |||||||||||||
| Period for Defendants Response to Complaint | 60 days | |||||||||||||
| Loss Contingency, New Claims Filed, Number | 1 | |||||||||||||
| Ownership percentage | 20.00% | |||||||||||||
| Equity Method Investmetn, Ownership Percentage by External Investors | 80.00% | |||||||||||||
| Loss Contingency, Damages Sought, Value | $ 45 | 100 | ||||||||||||
| Exchange Rate, Brazilian Real to USD | 0.4491 | |||||||||||||
| Number of US Options Exchanges | 2 | |||||||||||||
| Number of External Investors, Significant Equity Interest Sold | 7 | |||||||||||||
| Time Period to Exercise Option | 5 years | |||||||||||||
| Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners | 32.00% | 16.00% | ||||||||||||
| Redeemable Noncontrolling Interest, Equity, Common, Fair Value | 244 | |||||||||||||
| Payments for Repurchase of Redeemable Noncontrolling Interest | 128 | |||||||||||||
| Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners Repurchased | 16.00% | |||||||||||||
| Noncontrolling Interest, Ownership Percentage by Parent | 84.00% | |||||||||||||
| Redeemable Noncontrolling Interest, Equity, Fair Value | $ 116 | |||||||||||||