Revenue from Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 946,750	$ 982,117	$ 1,872,699	$ 1,910,855
Contract with Customer, Asset, after Allowance for Credit Loss	39,400		39,400		$ 35,700
Americas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	404,030	396,897	788,373	768,970
Europe [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	258,836	246,340	532,697	500,314
Asia [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	283,884	338,880	551,629	641,571
Product [Member] \| Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	712,260	758,971	1,413,228	1,474,972
Service [Member] \| Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	171,039	165,489	335,869	326,133
Service [Member] \| Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 63,451	57,657	$ 123,602	109,750
Laboratory products and services [Member]
Disaggregation of Revenue [Line Items]
Percentage of Disaggregated Revenue in Relationship to Segments	56.00%		56.00%
Revenue from Contract with Customer, Excluding Assessed Tax	$ 523,233	526,699	$ 1,048,288	1,046,730
Industrial products and services [Member]
Disaggregation of Revenue [Line Items]
Percentage of Disaggregated Revenue in Relationship to Segments	39.00%		39.00%
Revenue from Contract with Customer, Excluding Assessed Tax	$ 374,257	399,001	$ 726,102	754,181
Retail products and services [Member]
Disaggregation of Revenue [Line Items]
Percentage of Disaggregated Revenue in Relationship to Segments	5.00%		5.00%
Revenue from Contract with Customer, Excluding Assessed Tax	$ 49,260	56,417	$ 98,309	109,944
US Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	362,215	359,115	708,338	696,516
US Operations [Member] \| Product [Member] \| Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	264,345	265,881	515,081	512,410
US Operations [Member] \| Service [Member] \| Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	73,839	72,250	146,973	142,875
US Operations [Member] \| Service [Member] \| Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	24,031	20,984	46,284	41,231
Swiss Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	50,185	46,803	104,435	93,172
Swiss Operations [Member] \| Product [Member] \| Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	39,418	36,662	83,039	73,123
Swiss Operations [Member] \| Service [Member] \| Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	7,615	7,246	15,379	14,707
Swiss Operations [Member] \| Service [Member] \| Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	3,152	2,895	6,017	5,342
Western European Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	202,313	192,075	417,078	391,499
Western European Operations [Member] \| Product [Member] \| Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	137,113	130,404	288,648	271,111
Western European Operations [Member] \| Service [Member] \| Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	43,218	40,831	86,039	81,996
Western European Operations [Member] \| Service [Member] \| Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	21,982	20,840	42,391	38,392
Chinese Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	164,384	221,669	307,582	407,437
Chinese Operations [Member] \| Product [Member] \| Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	148,436	204,259	277,447	374,689
Chinese Operations [Member] \| Service [Member] \| Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	11,753	13,020	21,654	24,368
Chinese Operations [Member] \| Service [Member] \| Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	4,195	4,390	8,481	8,380
Other Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	167,653	162,455	335,266	322,231
Other Operations [Member] \| Product [Member] \| Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	122,948	121,765	249,013	243,639
Other Operations [Member] \| Service [Member] \| Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	34,614	32,142	65,824	62,187
Other Operations [Member] \| Service [Member] \| Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 10,091	$ 8,548	$ 20,429	$ 16,405