Total Net Sales by Product Group Category (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Segment Reporting Information [Line Items]
Net sales	$ 827,100	$ 759,900	$ 1,626,400	$ 1,500,200
Vascular
Segment Reporting Information [Line Items]
Net sales	233,000	212,200	452,200	415,400
Urology
Segment Reporting Information [Line Items]
Net sales	207,100	191,700	408,500	380,500
Oncology
Segment Reporting Information [Line Items]
Net sales	224,700	214,100	443,700	421,200
Surgical Specialties
Segment Reporting Information [Line Items]
Net sales	139,300	120,000	274,500	240,300
Other Product Group
Segment Reporting Information [Line Items]
Net sales	$ 23,000	$ 21,900	$ 47,500	$ 42,800