Condensed Consolidating and Combining Financial Statements (Schedule of Condensed Consolidating and Combining Statements of Comprehensive Income) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 27, 2014	Jun. 28, 2013	Jun. 27, 2014	Jun. 28, 2013
Condensed Consolidating Financial Statements
Net sales	$ 653.1	$ 570.0	$ 1,751.1	$ 1,659.3
Cost of sales	368.8	304.2	948.6	886.5
Gross profit	284.3	265.8	802.5	772.8
Selling, general and administrative expenses	221.3	166.9	561.6	474.4
Research and development expenses	42.7	44.8	123.1	122.4
Separation costs	1.8	44.2	6.6	70.6
Restructuring charges, net	23.8	11.3	53.5	17.9
Gains on divestiture and license	(0.9)	(0.8)	(14.7)	(2.2)
Operating income (loss)	(4.4)	(0.6)	72.4	89.7
Interest expense	(22.7)	(9.4)	(44.9)	(9.6)
Interest income	0.3	0	1.1	0.1
Other income (expense), net	0.1	2.1	(0.9)	2.3
Intercompany interest and fees	0	0	0	0
Equity in net income of subsidiaries	0	0	0	0
Income (loss) from continuing operations before income taxes	(26.7)	(7.9)	27.7	82.5
Income tax expense (benefit)	(2.4)	19.8	(6.1)	55.9
Income (loss) from continuing operations	(24.3)	(27.7)	33.8	26.6
Loss from discontinued operations, net of income taxes	0.2	(0.2)	(0.7)	(1.3)
Net income (loss)	(24.1)	(27.9)	33.1	25.3
Other comprehensive loss, net of tax	4.1	(6.4)	2.0	(20.3)
Comprehensive income (loss)	(20.0)	(34.3)	35.1	5.0
Mallinckrodt plc
Condensed Consolidating Financial Statements
Net sales	0	0	0	0
Cost of sales	0	0	0	0
Gross profit	0	0	0	0
Selling, general and administrative expenses	7.0	0.1	18.9	0.1
Research and development expenses	0	0	0	0
Separation costs	0.5	1.7	1.9	1.7
Restructuring charges, net	0.2	0	0.2	0
Gains on divestiture and license	0	0	0	0
Operating income (loss)	(7.7)	(1.8)	(21.0)	(1.8)
Interest expense	0	0	0	0
Interest income	0	0	0	0
Other income (expense), net	6.1	0	29.1	0
Intercompany interest and fees	(2.9)	0	(6.9)	0
Equity in net income of subsidiaries	(19.6)	(26.1)	31.9	27.1
Income (loss) from continuing operations before income taxes	(24.1)	(27.9)	33.1	25.3
Income tax expense (benefit)	0	0	0	0
Income (loss) from continuing operations	(24.1)	(27.9)	33.1	25.3
Loss from discontinued operations, net of income taxes	0	0	0	0
Net income (loss)	(24.1)	(27.9)	33.1	25.3
Other comprehensive loss, net of tax	4.1	(6.4)	2.0	(20.3)
Comprehensive income (loss)	(20.0)	(34.3)	35.1	5.0
Mallinckrodt International Finance S.A.
Condensed Consolidating Financial Statements
Net sales	0	0	0	0
Cost of sales	0	0	0	0
Gross profit	0	0	0	0
Selling, general and administrative expenses	0.2	0	0.4	0
Research and development expenses	0	0	0	0
Separation costs	0	0.3	0	0.3
Restructuring charges, net	0	0	0	0
Gains on divestiture and license	0	0	0	0
Operating income (loss)	(0.2)	(0.3)	(0.4)	(0.3)
Interest expense	(24.2)	(9.0)	(47.5)	(9.0)
Interest income	0	0	0	0
Other income (expense), net	0	0	0	0
Intercompany interest and fees	0	0	0	0
Equity in net income of subsidiaries	4.8	(16.8)	79.7	36.4
Income (loss) from continuing operations before income taxes	(19.6)	(26.1)	31.8	27.1
Income tax expense (benefit)	0	0	(0.1)	0
Income (loss) from continuing operations	(19.6)	(26.1)	31.9	27.1
Loss from discontinued operations, net of income taxes	0	0	0	0
Net income (loss)	(19.6)	(26.1)	31.9	27.1
Other comprehensive loss, net of tax	4.1	(6.4)	2.0	(20.3)
Comprehensive income (loss)	(15.5)	(32.5)	33.9	6.8
Other Subsidiaries
Condensed Consolidating Financial Statements
Net sales	653.1	570.0	1,751.1	1,659.3
Cost of sales	368.8	304.2	948.6	886.5
Gross profit	284.3	265.8	802.5	772.8
Selling, general and administrative expenses	214.1	166.8	542.3	474.3
Research and development expenses	42.7	44.8	123.1	122.4
Separation costs	1.3	42.2	4.7	68.6
Restructuring charges, net	23.6	11.3	53.3	17.9
Gains on divestiture and license	(0.9)	(0.8)	(14.7)	(2.2)
Operating income (loss)	3.5	1.5	93.8	91.8
Interest expense	1.5	(0.4)	2.6	(0.6)
Interest income	0.3	0	1.1	0.1
Other income (expense), net	(6.0)	2.1	(30.0)	2.3
Intercompany interest and fees	2.9	0	6.9	0
Equity in net income of subsidiaries	0	0	0	0
Income (loss) from continuing operations before income taxes	2.2	3.2	74.4	93.6
Income tax expense (benefit)	(2.4)	19.8	(6.0)	55.9
Income (loss) from continuing operations	4.6	(16.6)	80.4	37.7
Loss from discontinued operations, net of income taxes	0.2	(0.2)	(0.7)	(1.3)
Net income (loss)	4.8	(16.8)	79.7	36.4
Other comprehensive loss, net of tax	3.9	(3.0)	1.6	(12.9)
Comprehensive income (loss)	8.7	(19.8)	81.3	23.5
Eliminations
Condensed Consolidating Financial Statements
Net sales	0	0	0	0
Cost of sales	0	0	0	0
Gross profit	0	0	0	0
Selling, general and administrative expenses	0	0	0	0
Research and development expenses	0	0	0	0
Separation costs	0	0	0	0
Restructuring charges, net	0	0	0	0
Gains on divestiture and license	0	0	0	0
Operating income (loss)	0	0	0	0
Interest expense	0	0	0	0
Interest income	0	0	0	0
Other income (expense), net	0	0	0	0
Intercompany interest and fees	0	0	0	0
Equity in net income of subsidiaries	14.8	42.9	(111.6)	(63.5)
Income (loss) from continuing operations before income taxes	14.8	42.9	(111.6)	(63.5)
Income tax expense (benefit)	0	0	0	0
Income (loss) from continuing operations	14.8	42.9	(111.6)	(63.5)
Loss from discontinued operations, net of income taxes	0	0	0	0
Net income (loss)	14.8	42.9	(111.6)	(63.5)
Other comprehensive loss, net of tax	(8.0)	9.4	(3.6)	33.2
Comprehensive income (loss)	$ 6.8	$ 52.3	$ (115.2)	$ (30.3)