Guarantor Financial Information (Condensed Consolidating Statement of Cash Flows) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Cash Provided by (Used in) Operating Activities	$ 980.4	$ 1,013.9
CASH FLOWS FROM INVESTING ACTIVITIES:
Movements in restricted cash	67.2	(19.5)
Purchases of businesses, net of cash acquired	(17,476.2)	(5,249.2)
Purchases of non-current investments and PP&E	(179.1)	(44.7)
Proceeds from short-term investments	0.0	67.0
Proceeds from sale of product rights	5.6	8.8
Proceeds from disposal of non-current investments	0.0	4.4
Other, net	(2.3)	(0.9)
Net Cash Provided by (Used in) Investing Activities	(17,584.8)	(5,234.1)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from revolving line of credit, long term and short term borrowings	18,895.0	2,925.6
Repayment of lines of credit	(1,500.3)	(1,530.9)
Payment of dividend	(130.2)	(110.2)
Excess tax benefit associated with exercise of stock options	5.1	27.0
Debt issuance costs	(112.3)	(3.7)
Contingent consideration payments	(4.2)	(4.5)
Proceeds from (Payments for) Other Financing Activities	11.1	(0.8)
Net cash provided by financing activities	17,164.2	1,302.5
Effect of foreign exchange rate changes on cash and cash equivalents	(1.9)	(0.7)
Cash and Cash Equivalents, Period Increase (Decrease)	557.9	(2,918.4)
Cash and cash equivalents at beginning of period	135.5	2,982.4
Cash and cash equivalents at end of period	693.4	64.0
Consolidation, Eliminations [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Cash Provided by (Used in) Operating Activities	0.0	0.0
CASH FLOWS FROM INVESTING ACTIVITIES:
Net transactions with subsidiaries	23,525.6	5,915.1
Movements in restricted cash	0.0	0.0
Purchases of businesses, net of cash acquired	0.0	0.0
Purchases of non-current investments and PP&E	0.0	0.0
Proceeds from sale of product rights	0.0	0.0
Proceeds from disposal of non-current investments		0.0
Other, net	0.0	0.0
Net Cash Provided by (Used in) Investing Activities	23,525.6	5,915.1
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from revolving line of credit, long term and short term borrowings	0.0	0.0
Repayment of lines of credit	0.0	0.0
Net proceeds from/(to) intercompany borrowings	(23,525.6)	(5,915.1)
Payment of dividend	0.0	0.0
Excess tax benefit associated with exercise of stock options	0.0	0.0
Debt issuance costs	0.0
Contingent consideration payments	0.0	0.0
Proceeds from (Payments for) Other Financing Activities	0.0	0.0
Net cash provided by financing activities	(23,525.6)	(5,915.1)
Effect of foreign exchange rate changes on cash and cash equivalents	0.0	0.0
Cash and Cash Equivalents, Period Increase (Decrease)	0.0	0.0
Cash and cash equivalents at beginning of period	0.0	0.0
Cash and cash equivalents at end of period	0.0	0.0
Consolidated
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Cash Provided by (Used in) Operating Activities	980.4	1,013.9
CASH FLOWS FROM INVESTING ACTIVITIES:
Net transactions with subsidiaries	0.0	0.0
Movements in restricted cash	67.2	19.5
Purchases of businesses, net of cash acquired	17,476.2	5,249.2
Purchases of non-current investments and PP&E	179.1	44.7
Proceeds from sale of product rights	5.6	8.8
Proceeds from disposal of non-current investments		4.4
Other, net	2.3	0.9
Net Cash Provided by (Used in) Investing Activities	(17,584.8)	(5,234.1)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from revolving line of credit, long term and short term borrowings	18,895.0	2,925.6
Repayment of lines of credit	1,500.3	1,530.9
Net proceeds from/(to) intercompany borrowings	0.0	0.0
Payment of dividend	130.2	110.2
Excess tax benefit associated with exercise of stock options	5.1	27.0
Debt issuance costs	112.3
Contingent consideration payments	4.2	4.5
Proceeds from (Payments for) Other Financing Activities	11.1	(4.5)
Net cash provided by financing activities	17,164.2	1,302.5
Effect of foreign exchange rate changes on cash and cash equivalents	(1.9)	(0.7)
Cash and Cash Equivalents, Period Increase (Decrease)	557.9	(2,918.4)
Cash and cash equivalents at beginning of period	135.5	2,982.4
Cash and cash equivalents at end of period	693.4	64.0
Parent Company [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Cash Provided by (Used in) Operating Activities	(13.8)	(85.0)
CASH FLOWS FROM INVESTING ACTIVITIES:
Net transactions with subsidiaries	(1,900.0)	(3,570.0)
Movements in restricted cash	0.0	0.0
Purchases of businesses, net of cash acquired	19,049.0	0.0
Purchases of non-current investments and PP&E	0.0	0.0
Proceeds from short-term investments		0.0
Proceeds from sale of product rights	0.0	0.0
Proceeds from disposal of non-current investments		0.0
Other, net	0.0	0.0
Net Cash Provided by (Used in) Investing Activities	(20,949.0)	(3,570.0)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from revolving line of credit, long term and short term borrowings	905.0	2,850.0
Repayment of lines of credit	1,500.0	1,530.0
Net proceeds from/(to) intercompany borrowings	21,572.2	2,345.1
Payment of dividend	14.4	5.6
Excess tax benefit associated with exercise of stock options	0.0	0.0
Debt issuance costs	0.0
Contingent consideration payments	0.0	0.0
Proceeds from (Payments for) Other Financing Activities	0.0	(4.5)
Net cash provided by financing activities	20,962.8	3,655.0
Effect of foreign exchange rate changes on cash and cash equivalents	0.0	0.0
Cash and Cash Equivalents, Period Increase (Decrease)	0.0	0.0
Cash and cash equivalents at beginning of period	0.0	0.0
Cash and cash equivalents at end of period	0.0	0.0
Parent Company [Member] | Consolidation, Eliminations [Member]
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from short-term investments		0.0
Parent Company [Member] | Consolidated
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from short-term investments		67.0
Subsidiary Issuer [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Cash Provided by (Used in) Operating Activities	1.6	0.0
CASH FLOWS FROM INVESTING ACTIVITIES:
Net transactions with subsidiaries	0.0	0.0
Movements in restricted cash	0.0	0.0
Purchases of businesses, net of cash acquired	0.0	0.0
Purchases of non-current investments and PP&E	1.9	0.0
Proceeds from short-term investments		0.0
Proceeds from sale of product rights	0.0	0.0
Other, net	0.0	0.0
Net Cash Provided by (Used in) Investing Activities	(1.9)	0.0
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from revolving line of credit, long term and short term borrowings	0.0	0.0
Repayment of lines of credit	0.0	0.0
Net proceeds from/(to) intercompany borrowings	53.4	0.0
Payment of dividend	0.0	0.0
Excess tax benefit associated with exercise of stock options	0.0	0.0
Debt issuance costs	0.0
Contingent consideration payments	0.0	0.0
Proceeds from (Payments for) Other Financing Activities	0.3	0.0
Net cash provided by financing activities	53.7	0.0
Effect of foreign exchange rate changes on cash and cash equivalents	0.0	0.0
Cash and Cash Equivalents, Period Increase (Decrease)	53.4	0.0
Cash and cash equivalents at beginning of period	0.0	0.0
Cash and cash equivalents at end of period	53.4	0.0
Non-Guarantor Subsidiaries [Member]
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Cash Provided by (Used in) Operating Activities	992.6	1,098.9
CASH FLOWS FROM INVESTING ACTIVITIES:
Net transactions with subsidiaries	(21,625.6)	(2,345.1)
Movements in restricted cash	67.2	19.5
Purchases of businesses, net of cash acquired	(1,572.8)	5,249.2
Purchases of non-current investments and PP&E	177.2	44.7
Proceeds from short-term investments		67.0
Proceeds from sale of product rights	5.6	8.8
Proceeds from disposal of non-current investments		4.4
Other, net	2.3	0.9
Net Cash Provided by (Used in) Investing Activities	(20,159.5)	(7,579.2)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from revolving line of credit, long term and short term borrowings	17,990.0	75.6
Repayment of lines of credit	0.3	0.9
Net proceeds from/(to) intercompany borrowings	1,900.0	3,570.0
Payment of dividend	115.8	104.6
Excess tax benefit associated with exercise of stock options	5.1	27.0
Debt issuance costs	112.3
Contingent consideration payments	4.2	4.5
Proceeds from (Payments for) Other Financing Activities	10.8	0.0
Net cash provided by financing activities	19,673.3	3,562.6
Effect of foreign exchange rate changes on cash and cash equivalents	(1.9)	(0.7)
Cash and Cash Equivalents, Period Increase (Decrease)	504.5	(2,918.4)
Cash and cash equivalents at beginning of period	135.5	2,982.4
Cash and cash equivalents at end of period	640.0	$ 64.0
Non-Guarantor Subsidiaries [Member] | Consolidation, Eliminations [Member]
CASH FLOWS FROM FINANCING ACTIVITIES:
Cash and cash equivalents at beginning of period	$ 0.0