Commitments, Contingencies and Guarantees	3 Months Ended
Mar. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Commitments, Contingencies and Guarantees	15. Commitments, Contingencies and Guarantees Guarantees Issued and Credit Facilities Available In addition to the default fund contributions and margin collateral pledged by clearing members discussed in Note 14, “Clearing Operations,” we have obtained financial guarantees and credit facilities which are guaranteed by us through counter indemnities, to provide further liquidity and default protection related to our clearing businesses. Financial guarantees issued to us totaled $18 million at March 31, 2014 and $20 million at December 31, 2013. At March 31, 2014, credit facilities, which are available in multiple currencies, primarily Swedish Krona, totaled $311 million ($218 million in available liquidity and $93 million to satisfy regulatory requirements), none of which was utilized. At December 31, 2013, these facilities totaled $312 million ($219 million in available liquidity and $93 million to satisfy regulatory requirements), of which $11 million was utilized. Execution Access LLC, or Execution Access, is an introducing broker which operates the eSpeed trading platform for U.S. Treasury securities. Execution Access has a clearing arrangement with Cantor Fitzgerald & Co., or Cantor Fitzgerald. As of March 31, 2014, we have contributed $19 million of clearing deposits to Cantor Fitzgerald in connection with this clearing arrangement. These deposits are recorded in other current assets in our Condensed Consolidated Balance Sheets. Some of the trading activity in Execution Access is cleared by Cantor Fitzgerald through the Fixed Income Clearing Corporation, or FICC, and the balance is cleared non-FICC. Execution Access assumes the counterparty risk of clients that do not clear through FICC. Counterparty risk of clients exists for Execution Access between the trade date and the settlement date of the individual transactions, which is one business day. All of Execution Access’ obligations under the clearing arrangement with Cantor Fitzgerald are guaranteed by NASDAQ OMX. Some of the non-FICC counterparties are required to post collateral, provide principal letters, or provide other forms of credit enhancement to Execution Access for the purpose of mitigating counterparty risk. We believe that the potential for us to be required to make payments under these arrangements is mitigated through the pledged collateral and our risk management policies. Accordingly, no contingent liability is recorded in the Condensed Consolidated Balance Sheets for these arrangements. Lease Commitments We lease some of our office space and equipment under non-cancelable operating leases with third parties and sublease office space to third parties. Some of our lease agreements contain renewal options and escalation clauses based on increases in property taxes and building operating costs. Other Guarantees We have provided other guarantees of $15 million as of March 31, 2014 and $16 million at December 31, 2013. These guarantees are primarily related to obligations for our rental and leasing contracts. In addition, for certain Market Technology contracts, we have provided performance guarantees of $2 million as of March 31, 2014 and December 31, 2013 related to the delivery of software technology and support services. We have received financial guarantees from various financial institutions to support the above guarantees. We believe that the potential for us to be required to make payments under these arrangements is unlikely. Accordingly, no contingent liability is recorded in the Condensed Consolidated Balance Sheets for the above guarantees. In connection with the launch of NASDAQ OMX NLX, we have entered into agreements with certain members which may require us to make payments if certain financial goals are achieved. Since the amount of these payments is not currently probable and cannot be quantified as of March 31, 2014, no contingent liability is recorded in the Condensed Consolidated Balance Sheets for these payments. Contingent Consideration In March 2014, we completed the acquisition of the remaining 28% ownership interest in BWise. The purchase included two installment payments, the first of which was made in March 2014. The second installment payment is expected to be paid in 2015. As part of the eSpeed purchase price consideration, we have agreed to future annual issuances of 992,247 shares of NASDAQ OMX common stock which approximated certain tax benefits associated with the transaction. Such contingent future issuances of NASDAQ OMX common stock will be paid ratably through 2027 if NASDAQ OMX achieves a designated revenue target in each such year. The contingent future issuances of NASDAQ OMX common stock are subject to anti-dilution protections and acceleration upon certain events. Escrow Agreements In connection with our acquisitions of FTEN, Glide Technologies, and the Index Business of Mergent, Inc., including Indxis, we entered into escrow agreements to secure the payments of post-closing adjustments and to ensure other closing conditions. At March 31, 2014, these escrow agreements provide for future payments of $11 million and are included in other current liabilities and other non-current liabilities in the Condensed Consolidated Balance Sheets. Routing Brokerage Activities Our broker-dealer subsidiaries, Nasdaq Execution Services and NASDAQ Options Services, provide guarantees to securities clearinghouses and exchanges under their standard membership agreements, which require members to guarantee the performance of other members. If a member becomes unable to satisfy its obligations to a clearinghouse or exchange, other members would be required to meet its shortfalls. To mitigate these performance risks, the exchanges and clearinghouses often require members to post collateral, as well as meet certain minimum financial standards. Nasdaq Execution Services’ and NASDAQ Options Services’ maximum potential liability under these arrangements cannot be quantified. However, we believe that the potential for Nasdaq Execution Services and NASDAQ Options Services to be required to make payments under these arrangements is unlikely. Accordingly, no contingent liability is recorded in the Condensed Consolidated Balance Sheets for these arrangements. Litigation As previously disclosed, we became a party to several legal and regulatory proceedings in 2012 and 2013 relating to the Facebook IPO that occurred on May 18, 2012. We believe that the legal actions filed against NASDAQ OMX are without merit and intend to defend them vigorously. As described in our Annual Report on Form 10-K for the year ended December 31, 2012, we are named as a defendant in a consolidated matter captioned In re Facebook, Inc., IPO Securities and Derivative Litigation, MDL No. 2389 (S.D.N.Y.). Our appeal of the district court’s order granting in part and denying in part our motion to dismiss the consolidated amended complaint is currently pending in the United States Court of Appeals for the Second Circuit, at No. 14-1457. On April 10, 2014, an individual plaintiff commenced a new action in the Small Claims Court of the Superior Court of the California, County of Los Angeles, Southwest District, captioned Eshehata v. The NASDAQ OMX Group, Inc., No. 14S02684, alleging fraud, negligence, and an “unlawful scheme” in connection with the Facebook IPO. NASDAQ is removing the matter to federal court and seeking to have it transferred to the United States District Court for the Southern District of New York for coordination with the consolidated matter. In our Quarterly Report on Form 10-Q for the period ended March 31, 2013, we identified a demand for arbitration from a member organization seeking indemnification for alleged losses associated with the Facebook IPO. On June 18, 2013, the District Court for the Southern District of New York granted a preliminary injunction enjoining the arbitration, and the member organization has appealed the order granting the injunction to the Second Circuit Court of Appeals. We also are named as one of many defendants in a case captioned City of Providence v. BATS Global Markets, Inc., et al., 14 Civ. 2811 (S.D.N.Y.), which was filed on April 18, 2014 in the United States District Court for the Southern District of New York. The plaintiff has named as defendants sixteen national securities exchanges; fourteen of the largest brokerage firms in the United States; and twelve financial-services firms whose primary business allegedly is engaging in high-frequency trading. The plaintiff alleges that the defendants engaged in a scheme to manipulate the securities markets through high-frequency trading; they assert claims against us under Section 10(b) of the Securities Exchange Act of 1934, or the Act, and Rule 10b-5, as well as under Section 6(b) of the Act. Given the preliminary nature of the proceedings, we are unable to estimate what, if any, liability may result from this litigation. However, we believe the claims to be without merit and intend to litigate them vigorously. Except as disclosed above and in prior reports filed under the Act, we are not currently a party to any litigation or proceeding that we believe could have a material adverse effect on our business, consolidated financial condition, or operating results. However, from time to time, we have been threatened with, or named as a defendant in, lawsuits or involved in regulatory proceedings. Tax Audits We are engaged in ongoing discussions and audits with taxing authorities on various tax matters, the resolutions of which are uncertain. Currently, there are matters that may lead to assessments, some of which may not be resolved for several years. Based on currently available information, we believe we have adequately provided for any assessments that could result from those proceedings where it is more likely than not that we will be assessed. We review our positions on these matters as they progress.

15. Commitments, Contingencies and Guarantees

Guarantees Issued and Credit Facilities Available

In addition to the default fund contributions and margin collateral pledged by clearing members discussed in Note 14, “Clearing Operations,” we have obtained financial guarantees and credit facilities which are guaranteed by us through counter indemnities, to provide further liquidity and default protection related to our clearing businesses. Financial guarantees issued to us totaled $18 million at March 31, 2014 and $20 million at December 31, 2013. At March 31, 2014, credit facilities, which are available in multiple currencies, primarily Swedish Krona, totaled $311 million ($218 million in available liquidity and $93 million to satisfy regulatory requirements), none of which was utilized. At December 31, 2013, these facilities totaled $312 million ($219 million in available liquidity and $93 million to satisfy regulatory requirements), of which $11 million was utilized.

Execution Access LLC, or Execution Access, is an introducing broker which operates the eSpeed trading platform for U.S. Treasury securities. Execution Access has a clearing arrangement with Cantor Fitzgerald & Co., or Cantor Fitzgerald. As of March 31, 2014, we have contributed $19 million of clearing deposits to Cantor Fitzgerald in connection with this clearing arrangement. These deposits are recorded in other current assets in our Condensed Consolidated Balance Sheets. Some of the trading activity in Execution Access is cleared by Cantor Fitzgerald through the Fixed Income Clearing Corporation, or FICC, and the balance is cleared non-FICC. Execution Access assumes the counterparty risk of clients that do not clear through FICC. Counterparty risk of clients exists for Execution Access between the trade date and the settlement date of the individual transactions, which is one business day. All of Execution Access’ obligations under the clearing arrangement with Cantor Fitzgerald are guaranteed by NASDAQ OMX. Some of the non-FICC counterparties are required to post collateral, provide principal letters, or provide other forms of credit enhancement to Execution Access for the purpose of mitigating counterparty risk.

We believe that the potential for us to be required to make payments under these arrangements is mitigated through the pledged collateral and our risk management policies. Accordingly, no contingent liability is recorded in the Condensed Consolidated Balance Sheets for these arrangements.

Lease Commitments

We lease some of our office space and equipment under non-cancelable operating leases with third parties and sublease office space to third parties. Some of our lease agreements contain renewal options and escalation clauses based on increases in property taxes and building operating costs.

Other Guarantees

We have provided other guarantees of $15 million as of March 31, 2014 and $16 million at December 31, 2013. These guarantees are primarily related to obligations for our rental and leasing contracts. In addition, for certain Market Technology contracts, we have provided performance guarantees of $2 million as of March 31, 2014 and December 31, 2013 related to the delivery of software technology and support services. We have received financial guarantees from various financial institutions to support the above guarantees.

We believe that the potential for us to be required to make payments under these arrangements is unlikely. Accordingly, no contingent liability is recorded in the Condensed Consolidated Balance Sheets for the above guarantees.

In connection with the launch of NASDAQ OMX NLX, we have entered into agreements with certain members which may require us to make payments if certain financial goals are achieved. Since the amount of these payments is not currently probable and cannot be quantified as of March 31, 2014, no contingent liability is recorded in the Condensed Consolidated Balance Sheets for these payments.

Contingent Consideration

In March 2014, we completed the acquisition of the remaining 28% ownership interest in BWise. The purchase included two installment payments, the first of which was made in March 2014. The second installment payment is expected to be paid in 2015.

As part of the eSpeed purchase price consideration, we have agreed to future annual issuances of 992,247 shares of NASDAQ OMX common stock which approximated certain tax benefits associated with the transaction. Such contingent future issuances of NASDAQ OMX common stock will be paid ratably through 2027 if NASDAQ OMX achieves a designated revenue target in each such year. The contingent future issuances of NASDAQ OMX common stock are subject to anti-dilution protections and acceleration upon certain events.

Escrow Agreements

In connection with our acquisitions of FTEN, Glide Technologies, and the Index Business of Mergent, Inc., including Indxis, we entered into escrow agreements to secure the payments of post-closing adjustments and to ensure other closing conditions. At March 31, 2014, these escrow agreements provide for future payments of $11 million and are included in other current liabilities and other non-current liabilities in the Condensed Consolidated Balance Sheets.

Routing Brokerage Activities

Our broker-dealer subsidiaries, Nasdaq Execution Services and NASDAQ Options Services, provide guarantees to securities clearinghouses and exchanges under their standard membership agreements, which require members to guarantee the performance of other members. If a member becomes unable to satisfy its obligations to a clearinghouse or exchange, other members would be required to meet its shortfalls. To mitigate these performance risks, the exchanges and clearinghouses often require members to post collateral, as well as meet certain minimum financial standards. Nasdaq Execution Services’ and NASDAQ Options Services’ maximum potential liability under these arrangements cannot be quantified. However, we believe that the potential for Nasdaq Execution Services and NASDAQ Options Services to be required to make payments under these arrangements is unlikely. Accordingly, no contingent liability is recorded in the Condensed Consolidated Balance Sheets for these arrangements.

Litigation

As previously disclosed, we became a party to several legal and regulatory proceedings in 2012 and 2013 relating to the Facebook IPO that occurred on May 18, 2012. We believe that the legal actions filed against NASDAQ OMX are without merit and intend to defend them vigorously.

As described in our Annual Report on Form 10-K for the year ended December 31, 2012, we are named as a defendant in a consolidated matter captioned In re Facebook, Inc., IPO Securities and Derivative Litigation, MDL No. 2389 (S.D.N.Y.). Our appeal of the district court’s order granting in part and denying in part our motion to dismiss the consolidated amended complaint is currently pending in the United States Court of Appeals for the Second Circuit, at No. 14-1457. On April 10, 2014, an individual plaintiff commenced a new action in the Small Claims Court of the Superior Court of the California, County of Los Angeles, Southwest District, captioned Eshehata v. The NASDAQ OMX Group, Inc., No. 14S02684, alleging fraud, negligence, and an “unlawful scheme” in connection with the Facebook IPO. NASDAQ is removing the matter to federal court and seeking to have it transferred to the United States District Court for the Southern District of New York for coordination with the consolidated matter.

In our Quarterly Report on Form 10-Q for the period ended March 31, 2013, we identified a demand for arbitration from a member organization seeking indemnification for alleged losses associated with the Facebook IPO. On June 18, 2013, the District Court for the Southern District of New York granted a preliminary injunction enjoining the arbitration, and the member organization has appealed the order granting the injunction to the Second Circuit Court of Appeals.

We also are named as one of many defendants in a case captioned City of Providence v. BATS Global Markets, Inc., et al., 14 Civ. 2811 (S.D.N.Y.), which was filed on April 18, 2014 in the United States District Court for the Southern District of New York. The plaintiff has named as defendants sixteen national securities exchanges; fourteen of the largest brokerage firms in the United States; and twelve financial-services firms whose primary business allegedly is engaging in high-frequency trading. The plaintiff alleges that the defendants engaged in a scheme to manipulate the securities markets through high-frequency trading; they assert claims against us under Section 10(b) of the Securities Exchange Act of 1934, or the Act, and Rule 10b-5, as well as under Section 6(b) of the Act. Given the preliminary nature of the proceedings, we are unable to estimate what, if any, liability may result from this litigation. However, we believe the claims to be without merit and intend to litigate them vigorously.

Except as disclosed above and in prior reports filed under the Act, we are not currently a party to any litigation or proceeding that we believe could have a material adverse effect on our business, consolidated financial condition, or operating results. However, from time to time, we have been threatened with, or named as a defendant in, lawsuits or involved in regulatory proceedings.

Tax Audits

We are engaged in ongoing discussions and audits with taxing authorities on various tax matters, the resolutions of which are uncertain. Currently, there are matters that may lead to assessments, some of which may not be resolved for several years. Based on currently available information, we believe we have adequately provided for any assessments that could result from those proceedings where it is more likely than not that we will be assessed. We review our positions on these matters as they progress.