Fair Values of Net Assets Acquired (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Goodwill	$ 1,444.1	$ 1,354.9	$ 1,325.0
Anusol Acquisition
Business Acquisition [Line Items]
Inventory and other working capital	0.5
Trade names and other intangibles	91.7
Goodwill	37.8
Cash purchase price	130.0
Spencer Forrest, Inc
Business Acquisition [Line Items]
Inventory and other working capital	9.3
Property, plant and equipment and other long-term assets	0.2
Trade names and other intangibles	115.8
Goodwill	52.3
Current liabilities	(2.3)
Cash purchase price	175.3
VI-COR
Business Acquisition [Line Items]
Inventory and other working capital		1.1
Property, plant and equipment		6.4
Trade names and other intangibles		42.1
Goodwill		29.9
Purchase Price		79.5
Fair value of contingent payment due in one year	$ (4.6)	(4.6)
Cash purchase price		$ 74.9
Lil Drug Store Brands
Business Acquisition [Line Items]
Inventory and other working capital			3.2
Property, plant and equipment			0.7
Trade names and other intangibles			109.0
Goodwill			102.8
Purchase Price			$ 215.7