Aggregate dividends declared during the period for each share of common stock outstanding.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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- Definition

Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

+ References

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Balance Type:	debit
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- 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.

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Nasdaq Stockholders' Equity (Schedule of Dividends Declared) (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended
	Jan. 28, 2020	Mar. 31, 2020	Mar. 31, 2019
Dividends Payable [Line Items]
Dividend Per Common Share (in dollars per share)		$ 0.47	$ 0.44
Dividend Declaration Date First Quarter
Dividends Payable [Line Items]
Dividend Per Common Share (in dollars per share)	$ 0.47
Total Amount Paid	$ 78