Business Combinations (Baxalta Assets Acquired and Liabilities Assumed) (Details) - USD ($) $ in Millions	Jun. 03, 2016	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Goodwill		$ 14,850.6	$ 4,147.8	$ 4,289.6	$ 2,474.9
Baxalta
Current assets:
Cash and cash equivalents	$ 583.2
Accounts receivable, net	1,399.8
Inventories	5,064.7
Other current assets	362.2
Total current assets	7,409.9
Property, plant and equipment, net	5,569.3
Investments	128.2
Goodwill	8,001.0
Other non-current assets	103.3
Total assets	46,923.9
Current liabilities:
Accounts payable and accrued expenses	1,537.0
Other current liabilities	92.9
Long-term borrowings	5,424.9
Deferred tax liability	6,385.3
Other non-current liabilities	1,105.3
Total liabilities	14,545.4
Preliminary fair value of identifiable assets acquired and liabilities assumed	32,378.5
Preliminary fair value of purchase consideration	32,378.5
Currently marketed products | Baxalta
Current assets:
Other intangible assets, net	24,150.0
In-Process Research and Development (IPR&D) | Baxalta
Current assets:
Other intangible assets, net	1,480.0
Contract based arrangements | Baxalta
Current assets:
Other intangible assets, net	82.2
Preliminary values | Baxalta
Current assets:
Cash and cash equivalents	583.2
Accounts receivable, net	1,382.8
Inventories	5,341.1
Other current assets	362.2
Total current assets	7,669.3
Property, plant and equipment, net	5,687.7
Investments	128.2
Goodwill	6,106.4
Other non-current assets	103.3
Total assets	47,257.1
Current liabilities:
Accounts payable and accrued expenses	1,509.5
Other current liabilities	15.4
Long-term borrowings	5,424.9
Deferred tax liability	6,831.7
Other non-current liabilities	1,092.1
Total liabilities	14,873.6
Preliminary fair value of identifiable assets acquired and liabilities assumed	32,383.5
Preliminary fair value of purchase consideration	32,383.5
Preliminary values | Currently marketed products | Baxalta
Current assets:
Other intangible assets, net	24,550.0
Preliminary values | In-Process Research and Development (IPR&D) | Baxalta
Current assets:
Other intangible assets, net	2,940.0
Preliminary values | Contract based arrangements | Baxalta
Current assets:
Other intangible assets, net	72.2
Measurement period adjustments | Baxalta
Current assets:
Cash and cash equivalents	0.0
Accounts receivable, net	17.0
Inventories	(276.4)
Other current assets	0.0
Total current assets	(259.4)
Property, plant and equipment, net	(118.4)
Investments	0.0
Goodwill	1,894.6
Other non-current assets	0.0
Total assets	(333.2)
Current liabilities:
Accounts payable and accrued expenses	27.5
Other current liabilities	77.5
Long-term borrowings	0.0
Deferred tax liability	(446.4)
Other non-current liabilities	13.2
Total liabilities	(328.2)
Preliminary fair value of identifiable assets acquired and liabilities assumed	(5.0)
Preliminary fair value of purchase consideration	(5.0)
Measurement period adjustments | Currently marketed products | Baxalta
Current assets:
Other intangible assets, net	(400.0)
Measurement period adjustments | In-Process Research and Development (IPR&D) | Baxalta
Current assets:
Other intangible assets, net	(1,460.0)
Measurement period adjustments | Contract based arrangements | Baxalta
Current assets:
Other intangible assets, net	$ 10.0