Segment Reporting Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues	$ 3,919,709	$ 3,717,930	$ 3,085,177
Revenue Transactions With Other Operating Segments	0	0	0
Net Sales	3,919,709	3,717,930	3,085,177
Total Segment Profit	1,192,459	1,057,811	840,708
Depreciation	46,784	44,982	42,044
Assets	3,492,395	3,326,798	2,814,549
Purchase of property, plant and equipment	(121,241)	(107,580)	(92,494)
Goodwill	660,170	648,622	550,270
U.S. Operations Segment
Revenues	1,444,460	1,287,983	1,072,319
Revenue Transactions With Other Operating Segments	156,884	155,987	121,850
Net Sales	1,601,344	1,443,970	1,194,169
Segment Profit	357,802	302,177	244,940
Depreciation	14,582	12,123	11,347
Assets	3,574,842	3,278,400	2,560,652
Purchase of property, plant and equipment	(55,464)	(34,972)	(18,258)
Goodwill	524,470	508,942	415,869
Swiss Operations Segment
Revenues	176,119	171,633	143,923
Revenue Transactions With Other Operating Segments	839,951	826,001	679,837
Net Sales	1,016,070	997,634	823,760
Segment Profit	309,844	301,142	245,465
Depreciation	6,644	6,557	6,257
Assets	2,968,539	2,700,965	2,028,879
Purchase of property, plant and equipment	(7,690)	(7,856)	(5,495)
Goodwill	25,058	23,710	24,525
Western European Operations Segment
Revenues	799,931	829,761	716,715
Revenue Transactions With Other Operating Segments	196,900	211,547	173,176
Net Sales	996,831	1,041,308	889,891
Segment Profit	174,352	172,265	147,562
Depreciation	4,970	5,264	4,769
Assets	1,314,332	1,566,819	1,294,579
Purchase of property, plant and equipment	(5,110)	(11,014)	(13,678)
Goodwill	96,077	100,433	93,514
Chinese Operations Segment
Revenues	841,526	771,651	578,610
Revenue Transactions With Other Operating Segments	308,164	291,779	213,735
Net Sales	1,149,690	1,063,430	792,345
Segment Profit	424,162	369,835	270,497
Depreciation	9,699	9,566	8,506
Assets	1,234,303	1,037,838	985,977
Purchase of property, plant and equipment	(12,418)	(15,700)	(9,755)
Goodwill	641	710	686
Other Operations Segment
Revenues	657,673	656,902	573,610
Revenue Transactions With Other Operating Segments	3,959	4,780	4,600
Net Sales	661,632	661,682	578,210
Segment Profit	90,322	100,028	77,910
Depreciation	4,176	3,819	3,737
Assets	388,639	365,182	340,786
Purchase of property, plant and equipment	(6,268)	(5,652)	(5,974)
Goodwill	13,924	14,827	15,676
Eliminations and Corporate Segment
Revenues	0	0	0
Revenue Transactions With Other Operating Segments	(1,505,858)	(1,490,094)	(1,193,198)
Net Sales	(1,505,858)	(1,490,094)	(1,193,198)
Segment Profit	(164,023)	(187,636)	(145,666)
Depreciation	6,713	7,653	7,428
Assets	(5,988,260)	(5,622,406)	(4,396,324)
Purchase of property, plant and equipment	(34,291)	(32,386)	(39,334)
Goodwill	$ 0	$ 0	$ 0