Divestitures and Held for Sale - Schedule of Major Classes of Assets and Liabilities Held for Sale (Detail) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Discontinued Operations and Disposal Groups [Abstract]
Accounts receivable, net	$ 750.5	$ 794.7
Inventories, net	633.2	836.4
Prepaid expenses and other	77.1	87.9
Property, plant and equipment, net	607.1	310.1
Goodwill	2,370.7	2,189.6
Other intangible assets, net	2,915.5	2,652.1
Other assets	14.2	23.8
Current assets held-for-sale	7,368.3	6,894.6
Property, plant and equipment, net		429.0
Goodwill		1,497.5
Other intangible assets, net		1,384.3
Other assets		1.8
Noncurrent assets held-for-sale		3,312.6
Accounts payable	444.0	534.8
Accrued compensation	76.8	101.6
Other accrued liabilities	307.7	438.8
Deferred income taxes	3.3	197.9
Other liabilities	70.6	66.3
Current liabilities held-for-sale	902.4	1,339.4
Deferred income taxes	$ 0.0	0.0
Other liabilities		12.8
Noncurrent liabilities held-for-sale		$ 12.8