CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS SUPPLEMENTAL DISCLOSURE OF NON-CASH ITEMS (Parenthetical) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2018	Mar. 31, 2017
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS NON-CASH SUPPLEMENTAL DATA
Capital lease for acquisition of promotional vehicles	$ 0.1	$ 1.0
Accrued liabilities for intangibles	8.3	$ 6.2
Accounts receivable on short-term investments	$ 11.5

Represents the future cash outflow to pay for net change in accrued Liabilities related to intangible additions.

No definition available.

Name:	mnst_NetChangeInAccruedLiabilitiesIncurredButNotYetPaid
Namespace Prefix:	mnst_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration