Acquisitions and Other Transactions (Schedule of Purchase Price Allocation) (Details) - USD ($) $ in Millions		6 Months Ended
		Sep. 30, 2015	Feb. 27, 2015	[1]	Dec. 31, 2014
Business Acquisition [Line Items]
Goodwill		$ 5,125.3			$ 4,049.3
EPD Business
Business Acquisition [Line Items]
Accounts receivable		443.8	$ 462.5
Accounts receivable, measurement period adjustment	[2]	(18.7)
Inventories		198.5	196.3
Inventories, measurement period adjustment	[2]	2.2
Other current assets		70.1	70.1
Other current assets, measurement period adjustment		0.0
Property, plant and equipment		140.8	140.8
Property, plant and equipment, measurement period adjustment		0.0
Identified intangible assets		4,843.0	4,843.0
Identified intangible assets, measurement period adjustment		0.0
Goodwill		1,304.0	1,285.7
Goodwill, measurement period adjustment	[2]	18.3
Other assets		15.5	15.5
Other assets, measurement period adjustment		0.0
Total assets acquired		7,015.7	7,013.9
Total assets acquired, measurement period adjustment	[2]	1.8
Current liabilities		(269.0)	(269.0)
Current liabilities, measurement period adjustment		0.0
Deferred tax liabilities		(382.1)	(382.1)
Deferred tax liabilities, measurement period adjustment		0.0
Other non-current liabilities		(58.8)	(57.0)
Other non-current liabilities, measurement period adjustment	[2]	(1.8)
Net assets acquired		6,305.8	$ 6,305.8
Net assets acquired, measurement period adjustment		$ 0.0

[1] As originally reported in the Company’s Quarterly Report on Form 10-Q for the three months ended March 31, 2015.

[2] The measurement period adjustments are for 1) certain working capital adjustments to reflect facts and circumstances that existed as of the acquisition date, 2) an increase in the liability recorded for post-employment benefit programs to reflect updated opening balance sheet actuarial valuations and 3) the tax implications of these adjustments. These adjustments did not have a significant impact on the Company’s previously reported condensed consolidated financial statements and accordingly, the Company has not retrospectively adjusted those financial statements.