v3.5.0.1

Equity Dividends Declared (Details) - $ / shares |  |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | ---
Jan. 07, 2016 | Oct. 14, 2015 | Mar. 31, 2016 | Mar. 27, 2015 | Mar. 31, 2016 | Mar. 27, 2015
Dividends Declared [Abstract] |  |  |  |  |  |
Common Stock, Dividends, Per Share, Declared | $ 0.22 | $ 0.21 | $ 0.22 | $ 0.42 | $ 0.43 | $ 0.42

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- Definition Dividends Declared [Abstract] + References No definition available. + Details
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Namespace Prefix: | adt_
Data Type: | xbrli:stringItemType
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Period Type: | duration

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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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 + Details
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Balance Type: | na
Period Type: | duration