Business Combination - Houghton - Estimated Fair Values of Houghton Net Assets Acquired (Details) - USD ($) $ in Thousands		12 Months Ended
	Aug. 01, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Goodwill		$ 631,212	$ 607,205	$ 83,333
Less: Fair value of common stock issued as consideration			789,080
Net cash paid for Norman Hay		$ 56,230	$ 893,412	$ 500
Houghton [Member]
Business Acquisition [Line Items]
Cash and cash equivalents	$ 75,821
Accounts receivable, net	178,922
Inventories, net	95,193
Prepaid expenses and other assets	11,318
Propery, plant & equipment	115,463
Right of use lease assets	10,673
Investments in associated companies	66,447
Other non-current assets	6,263
Intangible assets	1,028,400
Goodwill	499,540
Total Assets Purchased	2,088,040
Short-term borrowings, not refinanced at closing	9,297
Accounts payable, accrued expenses and other accrued liabilities	151,205
Long-term lease liabilities	6,607
Other Non-Current Liabilities	49,286
Deferred tax liabilities	209,180
Total Liabilities Assumed	425,575
Less: cash Acquired	75,821
Total consideration paid for Houghton	1,662,465
Less: Fair value of common stock issued as consideration	789,080
Net cash paid for Norman Hay	797,564
Houghton [Member] | As initially Reported [Member]
Business Acquisition [Line Items]
Cash and cash equivalents	75,821
Accounts receivable, net	178,922
Inventories, net	95,193
Prepaid expenses and other assets	10,652
Propery, plant & equipment	115,529
Right of use lease assets	10,673
Investments in associated companies	66,447
Other non-current assets	4,710
Intangible assets	1,028,400
Goodwill	494,915
Total Assets Purchased	2,081,262
Short-term borrowings, not refinanced at closing	9,297
Accounts payable, accrued expenses and other accrued liabilities	150,078
Long-term lease liabilities	205,082
Other Non-Current Liabilities	6,607
Deferred tax liabilities	47,733
Total Liabilities Assumed	418,797
Less: cash Acquired	75,821
Total consideration paid for Houghton	1,662,465
Less: Fair value of common stock issued as consideration	789,080
Net cash paid for Norman Hay	797,564
Houghton [Member] | Measurement period adjustments [Member]
Business Acquisition [Line Items]
Cash and cash equivalents	0
Accounts receivable, net	0
Inventories, net	0
Prepaid expenses and other assets	666
Propery, plant & equipment	(66)
Right of use lease assets	0
Investments in associated companies	0
Other non-current assets	1,553
Intangible assets	0
Goodwill	4,625
Total Assets Purchased	6,778
Short-term borrowings, not refinanced at closing	0
Accounts payable, accrued expenses and other accrued liabilities	1,127
Long-term lease liabilities	0
Other Non-Current Liabilities	1,553
Deferred tax liabilities	4,098
Total Liabilities Assumed	6,778
Less: cash Acquired	0
Total consideration paid for Houghton	0
Less: Fair value of common stock issued as consideration	0
Net cash paid for Norman Hay	$ 0