Significant Accounting Policies - Additional Information (Detail) - USD ($)		3 Months Ended	6 Months Ended
	Jun. 24, 2015	Jun. 30, 2015	Jun. 30, 2015
Business And Significant Accounting Policies [Line Items]
Fair value of merger consideration transferred, classified as compensation expense		$ 164,100,000	$ 164,100,000
Merger retention plans, expenses recognized		73,000,000	73,000,000
Business combination liabilities related to integration plan, cash payments during period		$ 0
Reclassification of other current assets to debt			11,900,000
Reclassification of other assets to debt			68,600,000
LVB Acquisition Inc [Member]
Business And Significant Accounting Policies [Line Items]
Fair value of merger consideration transferred, classified as compensation expense	$ 164,100,000
Merger retention plans, expenses recognized			73,000,000
Deferred Compensation, Share-based Payments [Member] | LVB Acquisition Inc [Member]
Business And Significant Accounting Policies [Line Items]
Fair value of merger consideration transferred, classified as compensation expense			$ 164,100,000