Business Combinations - Changes in Carrying Amount of Goodwill (Detail) $ in Millions	9 Months Ended
	Sep. 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	16.7
Currency translation	252.2
Impairment	(32.7)
Goodwill, Ending Balance	11,310.6
Accumulated impairment loss, Ending Balance	(405.7)
Goodwill, net of accumulated impairment loss, Ending Balance	10,904.9
LDR Holding Corporation [Member]
Goodwill [Line Items]
Purchase accounting adjustments	24.8
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	13.2
Currency translation	82.5
Goodwill, Ending Balance	7,730.2
Goodwill, net of accumulated impairment loss, Ending Balance	7,730.2
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	(24.1)
Currency translation	110.0
Goodwill, Ending Balance	1,349.6
Goodwill, net of accumulated impairment loss, Ending Balance	1,349.6
Asia Pacific [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	487.3
Goodwill, net of accumulated impairment loss, Beginning Balance	487.3
Currency translation	10.0
Goodwill, Ending Balance	497.3
Goodwill, net of accumulated impairment loss, Ending Balance	497.3
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	27.6
Currency translation	49.7
Impairment	(32.7)
Goodwill, Ending Balance	1,733.5
Accumulated impairment loss, Ending Balance	(405.7)
Goodwill, net of accumulated impairment loss, Ending Balance	1,327.8
Product Category Operating Segments [Member] | LDR Holding Corporation [Member]
Goodwill [Line Items]
Purchase accounting adjustments	$ 24.8