Guarantees - Narrative (Details) - USD ($) $ in Millions	Jun. 24, 2016	Sep. 25, 2015
Guarantees [Abstract]
Performance guarantee obligations for 2012 separation, fair value	$ 3	$ 3
Performance guarantee obligations for 2007 separation, fair value	$ 3	$ 3

The liability for the financial and/or performance guarantees related to the entity's former subsidiaries for the 2012 separation which is recorded as of the balance sheet date.

No definition available.

Name:	tyc_GuaranteeObligationsFormerSubsidiariesForCurrentSeparationFairValue
Namespace Prefix:	tyc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant