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Nasdaq Stockholders' Equity (Schedule of Dividends Declared) (Details) - USD ($) $ / shares in Units, $ in Millions |  |  |  |  |  |  |  |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 16, 2022 | Oct. 19, 2022 | Sep. 30, 2022 | Jul. 19, 2022 | Jun. 24, 2022 | Apr. 20, 2022 | Mar. 25, 2022 | Jan. 26, 2022 | Jan. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Dividend per common share (in dollars per share) |  |  |  |  |  |  |  |  |  | $ 0.78 | $ 0.70 | $ 0.65
Total Amount Paid |  |  |  |  |  |  |  |  |  | $ 383 |  |
Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Dividend per common share (in dollars per share) |  |  |  |  |  |  |  |  | $ 0.20 |  |  |
Total Amount Paid |  |  |  |  |  |  |  |  | $ 98 |  |  |
Dividend declaration date, first quarter |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Dividend per common share (in dollars per share) |  |  |  |  |  |  |  | $ 0.18 |  |  |  |
Total Amount Paid |  |  |  |  |  |  | $ 88 |  |  |  |  |
Dividend declaration date, second quarter |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Dividend per common share (in dollars per share) |  |  |  |  |  | $ 0.20 |  |  |  |  |  |
Total Amount Paid |  |  |  |  | $ 98 |  |  |  |  |  |  |
Dividend declaration date, third quarter |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Dividend per common share (in dollars per share) |  |  |  | $ 0.20 |  |  |  |  |  |  |  |
Total Amount Paid |  |  | $ 99 |  |  |  |  |  |  |  |  |
Dividend declaration date, fourth quarter |  |  |  |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Dividend per common share (in dollars per share) |  | $ 0.20 |  |  |  |  |  |  |  |  |  |
Total Amount Paid | $ 98 |  |  |  |  |  |  |  |  |  |  |

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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References 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 https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 + Details
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- Definition Amount of paid and unpaid common stock dividends declared with the form of settlement in cash. + References 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 https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 + Details
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