Merger Costs (Details) $ in Millions	6 Months Ended
Mar. 25, 2016 USD ($)
Merger [Abstract]
Separation Transaction and Separation costs	$ 26

Represents the costs associated with the separation transaction, primarily consisting of professional fees, as well as costs related to separation.

No definition available.

Name:	tyc_SeparationTransactionandSeparationcosts
Namespace Prefix:	tyc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration