Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax [Line Items]
Net operating loss carryovers expire with in the period	$ 157.1
Net operating loss carryovers with indefinite life	24.2
Valuation allowances for net operating loss carryovers	70.8	$ 47.0
Total tax credit carryovers	110.4	207.8
Valuation allowances for certain tax credit carryovers	11.9	14.4
Capital loss carryovers	2.3
Valuation allowances for net Capital loss carryovers	0.2	4.2
Valuation allowances for potential capital losses	5.4	7.1
Unremitted earnings of foreign subsidiaries	4,677.0
Unrecognized tax benefits income tax penalties and interest expense recognized	19.3	4.8	$ 5.9
Recognized liability for interest and penalties	$ 110.8	82.9	$ 48.3
State examination period after notification	Up to one year
Decrease in unrecognized tax benefits within the next twelve months	$ 300.0
Increase in unrecognized tax benefits within the next twelve months	50.0
Biomet [Member]
Income Tax [Line Items]
Unrecognized tax benefits income tax penalties and interest expense increase related to Biomet merger	$ 8.6	$ 29.8
Minimum [Member]
Income Tax [Line Items]
Maturity period for net operating loss carryovers	1 year
Maturity period for tax credit carryovers	1 year
Maturity period for net Capital loss carryovers	2 years
Foreign jurisdictions statutes of limitation period	3 years
Maximum [Member]
Income Tax [Line Items]
Maturity period for net operating loss carryovers	20 years
Maturity period for tax credit carryovers	10 years
Maturity period for net Capital loss carryovers	4 years
Foreign jurisdictions statutes of limitation period	5 years