Other Operating Expenses, Net (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 30, 2016 USD ($) building facility	Jan. 01, 2016 USD ($) facility	Jan. 02, 2015 USD ($)
Spinoff [Member]
Restructuring Cost and Reserve [Line Items]
Costs to date	$ 10.4
Professional fees	4.4	$ 6.0
Orthopaedic Facility Optimization [Member]
Restructuring Cost and Reserve [Line Items]
Proceeds from assets held for sale		$ 0.6
Legacy Lake Region Medical Consolidation [Member]
Restructuring Cost and Reserve [Line Items]
Capital investments expended	2.2
Costs to date	$ 10.5
Number of facility consolidations | facility		2
Number of facilities after consolidation | facility	1
Legacy Lake Region Medical Consolidation [Member] | Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Expected capital expenditures	$ 5.0
Total expense expected	20.0
Legacy Lake Region Medical Consolidation [Member] | Minimum [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Total expense expected	11.0
Legacy Lake Region Medical Consolidation [Member] | Minimum [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Total expense expected	8.0
Legacy Lake Region Medical Consolidation [Member] | Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Expected capital expenditures	6.0
Total expense expected	25.0
Legacy Lake Region Medical Consolidation [Member] | Maximum [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Total expense expected	13.0
Legacy Lake Region Medical Consolidation [Member] | Maximum [Member] | Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Total expense expected	10.0
Lake Region Medical Consolidation [Member] | Minimum [Member] | Accelerated Depreciation And Asset Write Offs [Member]
Restructuring Cost and Reserve [Line Items]
Total expense expected	1.0
Lake Region Medical Consolidation [Member] | Maximum [Member] | Accelerated Depreciation And Asset Write Offs [Member]
Restructuring Cost and Reserve [Line Items]
Total expense expected	2.0
Acquisition And Integration Costs [Member] | Lake Region Medical [Member]
Restructuring Cost and Reserve [Line Items]
Capital investments expended	8.2
Costs to date	32.5
Acquisition related costs	28.3	$ 33.1
Acquisition integration related costs accrued	4.5	6.2
Acquisition And Integration Costs [Member] | Lake Region Medical [Member] | Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Total expense expected	40.0
Expected capital investment	20.0
Acquisition And Integration Costs [Member] | Lake Region Medical [Member] | Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Total expense expected	50.0
Expected capital investment	25.0
Investments in Capacity and Capabilities [Member]
Restructuring Cost and Reserve [Line Items]
Capital investments expended	23.3
Costs to date	49.1
Investments in Capacity and Capabilities [Member] | Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Expected capital expenditures	24.0
Total expense expected	50.0
Investments in Capacity and Capabilities [Member] | Minimum [Member] | Severance And Retention [Member]
Restructuring Cost and Reserve [Line Items]
Total expense expected	6.0
Investments in Capacity and Capabilities [Member] | Minimum [Member] | Accelerated Depreciation And Asset Write Offs [Member]
Restructuring Cost and Reserve [Line Items]
Total expense expected	3.0
Investments in Capacity and Capabilities [Member] | Minimum [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Total expense expected	41.0
Investments in Capacity and Capabilities [Member] | Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Expected capital expenditures	25.0
Total expense expected	55.0
Investments in Capacity and Capabilities [Member] | Maximum [Member] | Severance And Retention [Member]
Restructuring Cost and Reserve [Line Items]
Total expense expected	7.0
Investments in Capacity and Capabilities [Member] | Maximum [Member] | Accelerated Depreciation And Asset Write Offs [Member]
Restructuring Cost and Reserve [Line Items]
Total expense expected	3.0
Investments in Capacity and Capabilities [Member] | Maximum [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Total expense expected	45.0
Orthopaedic Facility Optimization [Member]
Restructuring Cost and Reserve [Line Items]
Capital investments expended	30.0
Costs to date	$ 44.6
Number of facility consolidations | building	2
Proceeds from assets held for sale		$ 0.6
Orthopaedic Facility Optimization [Member] | Minimum [Member]
Restructuring Cost and Reserve [Line Items]
Expected capital expenditures	$ 31.0
Total expense expected	45.0
Orthopaedic Facility Optimization [Member] | Minimum [Member] | Severance And Retention [Member]
Restructuring Cost and Reserve [Line Items]
Total expense expected	11.0
Orthopaedic Facility Optimization [Member] | Minimum [Member] | Accelerated Depreciation And Asset Write Offs [Member]
Restructuring Cost and Reserve [Line Items]
Total expense expected	13.0
Orthopaedic Facility Optimization [Member] | Minimum [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Total expense expected	21.0
Orthopaedic Facility Optimization [Member] | Maximum [Member]
Restructuring Cost and Reserve [Line Items]
Expected capital expenditures	35.0
Total expense expected	48.0
Orthopaedic Facility Optimization [Member] | Maximum [Member] | Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Total expense expected	$ 24.0
Swiss Orthopaedic Product Line [Member] | Orthopaedic Facility Optimization [Member]
Restructuring Cost and Reserve [Line Items]
Gain (loss) on disposal of business			$ 2.7