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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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Amount before tax of foreign currency transaction realized gain (loss) recognized in the income statement.

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Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill.

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No definition available.

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The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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- Definition

Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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No definition available.

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Basis of Presentation and Summary of Significant Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2020 USD ($) business segment	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Jun. 10, 2014
Net translation foreign currency translation (loss)/gain	$ (8,902,000)	$ (1,626,000)	$ (15,471,000)
Foreign exchange realized gains (losses)	28,500,000	(4,000,000.0)	(2,300,000)
Impairment of long-lived assets to be disposed of		0	0
Impairment of goodwill and intangible assets	$ 0	0	0
Number of businesses \| business	2
Number of reportable segments \| segment	3
Advertising costs incurred	$ 163,700,000	158,200,000	149,700,000
COVID-19
Impairment of goodwill and intangible assets	0	$ 0	$ 0
Backup
Impairment of goodwill and intangible assets	$ 0
Minimum
Weighted-Average Amortization Period	1 year
Maximum
Weighted-Average Amortization Period	20 years
Equipment \| Minimum
Estimated useful lives of property and equipment	1 year
Equipment \| Maximum
Estimated useful lives of property and equipment	10 years
Software and Software Development Costs \| Minimum
Estimated useful lives of property and equipment	1 year
Software and Software Development Costs \| Maximum
Estimated useful lives of property and equipment	5 years
3.25% Convertible Notes \| Convertible Debt
Stated interest rate				3.25%