BUSINESS ACQUISITIONS Business Acquisitions in the Aggregate (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Feb. 19, 2015	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Other Significant Noncash Transaction, Value of Consideration Given	$ 1,762,500,000	$ 0
Total acquisition consideration (cash and non-cash)			6,150,700,000
Other Long-term Debt	925,000,000			0
Revenues	1,793,200,000	1,430,700,000
Payments to Acquire Businesses, Net of Cash Acquired	3,622,200,000	65,700,000
Goodwill, Acquired During Period	3,187,600,000	81,800,000
Unbilled Receivables, Current	72,400,000
Goodwill	6,282,200,000			3,099,400,000	3,022,800,000
Covance [Member]
Business Acquisition [Line Items]
Business Acquisition, Transaction Costs	207,600,000
Post combination acceleration of stock compensation expense	43,200,000
Employer taxes on accelerated equity	9,400,000
Make-whole payment	37,400,000
Cash paid for acquisition			4,388,200,000
Other Significant Noncash Transaction, Value of Consideration Given	1,762,500,000
Total acquisition consideration (cash and non-cash)			6,150,700,000
Cash consideration			780,800,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent			730,200,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt			250,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable			190,800,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities			280,800,000
Deferred Revenue			168,000,000
Other Long-term Debt			1,000,000,000,000
Revenues	267,200,000
Revenues	2,146,400,000	2,097,000,000
Net Income (Loss) Attributable to Parent	110,400,000	(25,100,000)
Cash on Hand Used for Acquisition			488,200,000
Acquisition Financing			3,900,000,000,000
Other long term debt acquistion financing			400,000,000
Accounts receivable			334,800,000
Unbilled Receivables, Current			138,700,000
Inventories			51,900,000
Prepaid expenses and other			261,400,000
Deferred income taxes			34,400,000
Property, plant and equipment			844,200,000
Goodwill			3,176,100,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Assets			15,200,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other			78,500,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities			1,698,300,000
Operating income	250,100,000	78,600,000
Basic	$ 1,090,000	$ (250,000)
Business Acquisition, Pro Forma Earnings Per Share, Diluted	$ 1,080,000	$ (250,000)
Covance, Inc. [Member]
Business Acquisition [Line Items]
Change in control and severance payments	26,800,000
Legal Fees	75,600,000
Write off of bridge and other deferred financing costs	15,200,000
Excluding Covance [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	14,700,000
Finite-lived Intangible Assets Acquired	3,400,000
Goodwill, Acquired During Period	11,500,000
Customer Relationships [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	27 years
Customer Relationships [Member] | Covance [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill			1,917,200,000
Trademarks and Trade Names [Member] | Covance [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	15 years
Trade Names [Member] | Covance [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill			289,400,000
Use Rights [Member] | Covance [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	3 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill			$ 4,900,000