Distribution Agreements, Net - Reconciliation of Activity for Other Identifiable Intangible Assets Net (Parenthetical) (Detail) $ in Millions	12 Months Ended
Dec. 31, 2017 USD ($)
System Transformation Transactions [Member]
Finite Lived Intangible Assets [Line Items]
Increase in acquisitions for expansion territories and expansion facilities acquired	$ 51.5

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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