Acquisitions (Details) $ in Thousands, € in Millions					3 Months Ended				12 Months Ended
	Apr. 07, 2017 USD ($)	Jan. 17, 2017 EUR (€)	Jan. 17, 2017 USD ($)	Oct. 07, 2016 USD ($)	Sep. 30, 2016 EUR (€)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Business Acquisition [Line Items]
Cash paid for business acquisition									$ 192,328	$ 236,836	$ 493,424
Goodwill									1,156,288	$ 1,000,123	$ 941,389	$ 675,484
PowderPure [Member]
Business Acquisition [Line Items]
Percentage of voting interest acquired	100.00%
Cash paid to acquire business	$ 54,600
Cash acquired from acquisition	400
Additional contingent consideration	1,400
Purchase price exceeds preliminary fair value of net assets	48,000
Goodwill, expected tax deductible amount	15,200
PowderPure [Member] | Maximum [Member]
Business Acquisition [Line Items]
Earn out payable	10,000
PowderPure [Member] | Proprietary Technology [Member]
Business Acquisition [Line Items]
Intangible assets acquired	$ 27,500
Acquired intangible assets, useful life	14 years
PowderPure [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Intangible assets acquired	$ 4,500
Acquired intangible assets, useful life	14 years
PowderPure [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets acquired	$ 800
Acquired intangible assets, useful life	2 years
Fragrance Resources [Member]
Business Acquisition [Line Items]
Percentage of voting interest acquired			100.00%
Cash paid to acquire business		€ 143.4	$ 151,900
Cash acquired from acquisition		13.7	14,400
Purchase price exceeds preliminary fair value of net assets			122,000
Business combination, consideration transferred		142.0	150,500
Additional payment for working capital adjustment		€ 1.4	1,500
Goodwill, not expected tax deductible amount			72,000
Accrued liabilities			$ 15,300
Fragrance Resources [Member] | Proprietary Technology [Member]
Business Acquisition [Line Items]
Acquired intangible assets, useful life		5 years	5 years
Fragrance Resources [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Acquired intangible assets, useful life		2 years	2 years
Fragrance Resources [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets acquired			$ 51,700
Fragrance Resources [Member] | Customer Relationships [Member] | Minimum [Member]
Business Acquisition [Line Items]
Acquired intangible assets, useful life		12 years	12 years
Fragrance Resources [Member] | Customer Relationships [Member] | Maximum [Member]
Business Acquisition [Line Items]
Acquired intangible assets, useful life		16 years	16 years
Fragrance Resources [Member] | Trade Names and Proprietary Technology [Member]
Business Acquisition [Line Items]
Intangible assets acquired			$ 13,600
David Michael & Company, Inc. [Member]
Business Acquisition [Line Items]
Percentage of voting interest acquired				100.00%
Cash paid to acquire business				$ 242,600
Cash acquired from acquisition				$ 5,100
Purchase price exceeds preliminary fair value of net assets							$ 168,700
Goodwill, expected tax deductible amount							110,200
Additional payment for working capital adjustment							700
Goodwill									$ 35,380
David Michael & Company, Inc. [Member] | Proprietary Technology [Member]
Business Acquisition [Line Items]
Acquired intangible assets, useful life				5 years
David Michael & Company, Inc. [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Acquired intangible assets, useful life				2 years
David Michael & Company, Inc. [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets acquired							50,000
David Michael & Company, Inc. [Member] | Customer Relationships [Member] | Minimum [Member]
Business Acquisition [Line Items]
Acquired intangible assets, useful life				18 years
David Michael & Company, Inc. [Member] | Customer Relationships [Member] | Maximum [Member]
Business Acquisition [Line Items]
Acquired intangible assets, useful life				20 years
David Michael & Company, Inc. [Member] | Trade Names and Proprietary Technology [Member]
Business Acquisition [Line Items]
Intangible assets acquired							$ 8,400
Lucas Meyer [Member]
Business Acquisition [Line Items]
Percentage of voting interest acquired						100.00%
Cash acquired from acquisition						$ 4,800
Purchase price exceeds preliminary fair value of net assets						290,100
Intangible assets acquired						156,400
Business combination, consideration transferred					€ 284.0	312,100
Cash paid for business acquisition					282.1	309,900
Liabilities incurred					€ 2.0	2,200
Goodwill						179,500
Deferred taxes						$ 40,100
Lucas Meyer [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Acquired intangible assets, useful life					23 years	23 years
Lucas Meyer [Member] | Trade Names and Proprietary Technology [Member]
Business Acquisition [Line Items]
Acquired intangible assets, useful life					28 years	28 years
Lucas Meyer [Member] | Patents [Member]
Business Acquisition [Line Items]
Acquired intangible assets, useful life					11 years	11 years
Lucas Meyer [Member] | Non-solicitation Agreements [Member]
Business Acquisition [Line Items]
Acquired intangible assets, useful life					3 years	3 years
Henry H Ottens Manufacturing Co [Member]
Business Acquisition [Line Items]
Percentage of voting interest acquired								100.00%
Cash acquired from acquisition								$ 10,400
Purchase price exceeds preliminary fair value of net assets								162,100
Intangible assets acquired								80,000
Cash paid for business acquisition								198,900
Goodwill								$ 82,100
Henry H Ottens Manufacturing Co [Member] | Minimum [Member]
Business Acquisition [Line Items]
Acquired intangible assets, useful life								5 years
Henry H Ottens Manufacturing Co [Member] | Maximum [Member]
Business Acquisition [Line Items]
Acquired intangible assets, useful life								17 years