Goodwill and Intangible Assets - Changes in Carrying Amount of Goodwill (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2021 USD ($)
Goodwill [Line Items]
Goodwill, Beginning Balance	$ 11,527.4
Accumulated impairment losses, Beginning Balance	(2,265.6)
Goodwill, net of accumulated impairment losses, Beginning Balance	9,261.8
Purchase accounting adjustments	22.1
Other acquisitions	2.4
Currency translation	(74.3)
Goodwill, Ending Balance	11,477.6
Accumulated impairment losses, Ending Balance	(2,265.6)
Goodwill, net of accumulated impairment losses, Ending Balance	9,212.0
Americas Orthopedics [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	9,583.7
Accumulated impairment losses, Beginning Balance	(1,228.6)
Goodwill, net of accumulated impairment losses, Beginning Balance	8,355.1
Goodwill reportable segment change	(1,491.3)
Accumulated impairment losses reportable segment change	1,220.9
Purchase accounting adjustments	14.6
Other acquisitions	2.4
Currency translation	(49.4)
Goodwill, Ending Balance	8,060.0
Accumulated impairment losses, Ending Balance	(7.7)
Goodwill, net of accumulated impairment losses, Ending Balance	8,052.3
EMEA [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	1,362.9
Accumulated impairment losses, Beginning Balance	(1,037.0)
Goodwill, net of accumulated impairment losses, Beginning Balance	325.9
Purchase accounting adjustments	5.2
Currency translation	(12.1)
Goodwill, Ending Balance	1,356.0
Accumulated impairment losses, Ending Balance	(1,037.0)
Goodwill, net of accumulated impairment losses, Ending Balance	319.0
Asia Pacific [Member]
Goodwill [Line Items]
Goodwill, Beginning Balance	580.8
Goodwill, net of accumulated impairment losses, Beginning Balance	580.8
Purchase accounting adjustments	2.3
Currency translation	(11.7)
Goodwill, Ending Balance	571.4
Goodwill, net of accumulated impairment losses, Ending Balance	571.4
Americas Spine and Global Dental [Member]
Goodwill [Line Items]
Goodwill reportable segment change	1,491.3
Accumulated impairment losses reportable segment change	(1,220.9)
Currency translation	(1.1)
Goodwill, Ending Balance	1,490.2
Accumulated impairment losses, Ending Balance	(1,220.9)
Goodwill, net of accumulated impairment losses, Ending Balance	$ 269.3