Business Combinations - Changes in Carrying Amount of Goodwill (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2017 USD ($)
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 11,016.9
Accumulated impairment loss, Beginning Balance	(373.0)
Goodwill, net of accumulated impairment loss, Beginning Balance	10,643.9
Purchase accounting adjustments	22.0
Currency translation	174.8
Goodwill, Ending Balance	11,238.5
Accumulated impairment loss, Ending Balance	(373.0)
Goodwill, net of accumulated impairment loss, Ending Balance	10,865.5
LDR Holding Corporation [Member]
Goodwill [Line Items]
Purchase accounting adjustments	24.8
Goodwill, net of accumulated impairment loss, Ending Balance	507.2
Americas [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	7,634.5
Goodwill, net of accumulated impairment loss, Beginning Balance	7,634.5
Purchase accounting adjustments	13.3
Currency translation	57.1
Goodwill, Ending Balance	7,704.9
Goodwill, net of accumulated impairment loss, Ending Balance	7,704.9
EMEA [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	1,263.7
Goodwill, net of accumulated impairment loss, Beginning Balance	1,263.7
Purchase accounting adjustments	(4.8)
Currency translation	85.2
Goodwill, Ending Balance	1,344.1
Goodwill, net of accumulated impairment loss, Ending Balance	1,344.1
Asia Pacific [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	487.3
Goodwill, net of accumulated impairment loss, Beginning Balance	487.3
Currency translation	7.8
Goodwill, Ending Balance	495.1
Goodwill, net of accumulated impairment loss, Ending Balance	495.1
Product Category Operating Segments [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	1,631.4
Accumulated impairment loss, Beginning Balance	(373.0)
Goodwill, net of accumulated impairment loss, Beginning Balance	1,258.4
Purchase accounting adjustments	13.5
Currency translation	24.7
Goodwill, Ending Balance	1,694.4
Accumulated impairment loss, Ending Balance	(373.0)
Goodwill, net of accumulated impairment loss, Ending Balance	1,321.4
Product Category Operating Segments [Member] | LDR Holding Corporation [Member]
Goodwill [Line Items]
Purchase accounting adjustments	$ 24.8