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Business Combinations - Fair Values of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	Jun. 30, 2016	Apr. 01, 2016	Mar. 31, 2016
Business Acquisition [Line Items]
Goodwill	$ 11,127		$ 9,786
Vantage and Biologics
Business Acquisition [Line Items]
Receivables		$ 106
Other current assets, net of cash and cash equivalents acquired		19
Goodwill		1,219
Intangible assets		136
Other long-term assets		76
Current liabilities		(117)
Other long-term liabilities		(80)
Fair value of net assets, less cash and cash equivalents		1,359
Less: Noncontrolling Interests		(152)
Net assets acquired, net of cash and cash equivalents		$ 1,207

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