Restructuring and Related Charges (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 25, 2015	Jul. 01, 2016	Sep. 27, 2013
Employee terminations
Restructuring Cost and Reserve [Line Items]
Accelerated share based compensation expense	$ 9.8
2013 Mallinckrodt program | Minimum
Restructuring Cost and Reserve [Line Items]
Mallinckrodt program expected cost range			$ 100.0
2013 Mallinckrodt program | Maximum
Restructuring Cost and Reserve [Line Items]
Mallinckrodt program expected cost range			$ 125.0
2016 Mallinckrodt Program | Minimum
Restructuring Cost and Reserve [Line Items]
Mallinckrodt program expected cost range		$ 100.0
2016 Mallinckrodt Program | Maximum
Restructuring Cost and Reserve [Line Items]
Mallinckrodt program expected cost range		$ 125.0