Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Detail) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2018	Dec. 31, 2017
Goodwill [Line Items]
Goodwill, Beginning Balance		$ 11,346.1	$ 11,016.9
Accumulated impairment losses, Beginning Balance		(677.7)	(373.0)
Goodwill, net of accumulated impairment losses, Beginning Balance		10,668.4	10,643.9
Purchase accounting adjustments			(6.1)
Currency translation		(98.1)	310.8
Impairment	$ (975.9)	(975.9)	(304.7)
Goodwill, Ending Balance	11,248.0	11,248.0	11,346.1
Accumulated impairment losses, Ending Balance	(1,653.6)	(1,653.6)	(677.7)
Goodwill, net of accumulated impairment losses, Ending Balance	9,594.4	9,594.4	10,668.4
LDR Holding Corporation [Member]
Goodwill [Line Items]
Purchase accounting adjustments			24.5
Americas [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance		7,724.8	7,634.5
Goodwill, net of accumulated impairment losses, Beginning Balance		7,724.8	7,634.5
Purchase accounting adjustments			(0.5)
Currency translation		(12.4)	90.8
Goodwill, Ending Balance	7,712.4	7,712.4	7,724.8
Goodwill, net of accumulated impairment losses, Ending Balance	7,712.4	7,712.4	7,724.8
EMEA [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance		1,379.8	1,263.7
Goodwill, net of accumulated impairment losses, Beginning Balance		1,379.8	1,263.7
Purchase accounting adjustments			(33.2)
Currency translation		(57.6)	149.3
Impairment		(567.0)
Goodwill, Ending Balance	1,322.2	1,322.2	1,379.8
Accumulated impairment losses, Ending Balance	(567.0)	(567.0)
Goodwill, net of accumulated impairment losses, Ending Balance	755.2	755.2	1,379.8
Asia Pacific [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance		500.5	487.3
Goodwill, net of accumulated impairment losses, Beginning Balance		500.5	487.3
Currency translation		6.7	13.2
Goodwill, Ending Balance	507.2	507.2	500.5
Goodwill, net of accumulated impairment losses, Ending Balance	507.2	507.2	500.5
Immaterial Product Category Operating Segments [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance		1,741.0	1,631.4
Accumulated impairment losses, Beginning Balance		(677.7)	(373.0)
Goodwill, net of accumulated impairment losses, Beginning Balance		1,063.3	1,258.4
Purchase accounting adjustments			27.6
Currency translation		(34.8)	57.5
Impairment		(408.9)	(304.7)
Goodwill, Ending Balance	1,706.2	1,706.2	1,741.0
Accumulated impairment losses, Ending Balance	(1,086.6)	(1,086.6)	(677.7)
Goodwill, net of accumulated impairment losses, Ending Balance	$ 619.6	$ 619.6	1,063.3
Immaterial Product Category Operating Segments [Member] | LDR Holding Corporation [Member]
Goodwill [Line Items]
Purchase accounting adjustments			$ 24.5