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Goodwill and Other Intangible Assets, Net - Schedule of Other Intangible Assets and Related Amortization Periods (Detail) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Mar. 31, 2019
Intangible Assets [Line Items] |  |
Indefinite life, Net Book Value | $ 4,093.1 |
Gross Carrying Amount | 6,298.6 | 6,301.6
Accumulated Amortization | (719.0) | (765.2)
Net Book Value | 5,579.6 | 5,536.4
Trade Names [Member] |  |
Intangible Assets [Line Items] |  |
Indefinite life, Net Book Value | 4,093.0 | 4,089.4
Trade Names [Member] |  |
Intangible Assets [Line Items] |  |
Indefinite life, Net Book Value | 4,093.0 | 4,089.4
Gross Carrying Amount | 170.5 | 170.3
Accumulated Amortization | (36.5) | (39.9)
Net Book Value | $ 134.0 | 130.4
Trade Names [Member] | Minimum [Member] |  |
Intangible Assets [Line Items] |  |
Amortization periods | 2 years |
Trade Names [Member] | Maximum [Member] |  |
Intangible Assets [Line Items] |  |
Amortization periods | 15 years |
Capitalized Software [Member] |  |
Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 520.0 | 529.0
Accumulated Amortization | (348.1) | (363.7)
Net Book Value | $ 171.9 | 165.3
Capitalized Software [Member] | Minimum [Member] |  |
Intangible Assets [Line Items] |  |
Amortization periods | 3 years |
Capitalized Software [Member] | Maximum [Member] |  |
Intangible Assets [Line Items] |  |
Amortization periods | 12 years |
Patents and Intellectual Property [Member] |  |
Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 136.4 | 134.1
Accumulated Amortization | (79.2) | (83.4)
Net Book Value | $ 57.2 | 50.7
Patents and Intellectual Property [Member] | Minimum [Member] |  |
Intangible Assets [Line Items] |  |
Amortization periods | 3 years |
Patents and Intellectual Property [Member] | Maximum [Member] |  |
Intangible Assets [Line Items] |  |
Amortization periods | 14 years |
Customer Relationships & Distributor Channels [Member] |  |
Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 1,269.7 | 1,269.8
Accumulated Amortization | (180.9) | (196.9)
Net Book Value | $ 1,088.8 | 1,072.9
Customer Relationships & Distributor Channels [Member] | Minimum [Member] |  |
Intangible Assets [Line Items] |  |
Amortization periods | 3 years |
Customer Relationships & Distributor Channels [Member] | Maximum [Member] |  |
Intangible Assets [Line Items] |  |
Amortization periods | 30 years |
Other [Member] |  |
Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 109.0 | 109.0
Accumulated Amortization | (74.3) | (81.3)
Net Book Value | $ 34.7 | $ 27.7
Other [Member] | Minimum [Member] |  |
Intangible Assets [Line Items] |  |
Amortization periods | 3 years |
Other [Member] | Maximum [Member] |  |
Intangible Assets [Line Items] |  |
Amortization periods | 5 years |

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