Business Combinations - Fair Values of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016
Business Acquisition [Line Items]
Goodwill	$ 9,693		$ 9,786
Vantage and Biologics
Business Acquisition [Line Items]
Receivables	106
Adjustment - Receivables	0
Other current assets, net of cash and cash equivalents acquired	19
Adjustment - Other current assets, net of cash and cash equivalents acquired	0
Goodwill	1,078
Adjustment - Goodwill	(141)
Intangible assets	208
Adjustment - Intangible assets	72
Other long-term assets	113
Adjustment - Other long-term assets	37
Current liabilities	(120)
Adjustment - Current liabilities	(3)
Other long-term liabilities	(108)
Adjustment - Other long-term liabilities	(28)
Fair value of net assets, less cash and cash equivalents	1,296
Adjustment - Fair value of net assets, less cash and cash equivalents	(63)
Less: Noncontrolling Interests	(89)
Adjustment - Less: Noncontrolling Interests	63
Net assets acquired, net of cash and cash equivalents	1,207
Adjustment - Net assets acquired, net of cash and cash equivalents	$ 0
Vantage and Biologics | Previously Reported
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