Acquisitions (Allocation Of The Preliminary Purchase Price To The Acquired Net Assets (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Dec. 31, 2018
Goodwill	$ 8,710	$ 8,563
K2M
Accounts receivable	67
Inventory	136
Other assets	118
Contingent consideration	0
Other liabilities	(247)
Goodwill	786
Assets and liabilities acquired, net	$ 1,380
Weighted-average life of intangible assets	14 years
K2M \| Customer relationship
Intangible assets acquired	$ 34
K2M \| Distributor relationship
Intangible assets acquired	1
K2M \| Trade name
Intangible assets acquired	10
K2M \| Developed technology and patents
Intangible assets acquired	473
K2M \| Internally developed software
Intangible assets acquired	2
Entellus
Accounts receivable	17
Inventory	14
Other assets	62
Contingent consideration	(79)
Other liabilities	(76)
Goodwill	465
Assets and liabilities acquired, net	$ 697
Weighted-average life of intangible assets	16 years
Entellus \| Customer relationship
Intangible assets acquired	$ 33
Entellus \| Distributor relationship
Intangible assets acquired	0
Entellus \| Trade name
Intangible assets acquired	0
Entellus \| Developed technology and patents
Intangible assets acquired	261
Entellus \| Internally developed software
Intangible assets acquired	$ 0

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Amount of liability recognized arising from contingent consideration in a business combination.

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