XML 100 R75.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Debt Obligations (2016 Credit Facility) (Details) - $400 million senior unsecured term loan facility due November 25, 2019 - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Mar. 31, 2016
Debt Instrument [Line Items] |  |
Credit facility, borrowing capacity | $ 400,000,000 | $ 400,000,000
Percentage of principal repayment | 2.50% |

X
- Definition Percentage Of Principal Repayment + References No definition available. + Details
Name: | ndaq_PercentageOfPrincipalRepayment
Namespace Prefix: | ndaq_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_DebtInstrumentAxis=ndaq_FourHundredMillionTermLoanFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |