Revenue from Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 954,535	$ 942,462	$ 2,827,234	$ 2,853,317
Contract with Customer, Asset, after Allowance for Credit Loss	40,600		40,600		$ 35,700
Americas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	393,620	397,721	1,181,992	1,166,691
Europe [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	259,993	255,157	792,690	755,470
Asia [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	300,922	289,584	852,552	931,156
Product [Member] \| Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	715,593	722,611	2,128,821	2,197,583
Service [Member] \| Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	171,681	162,784	507,550	488,917
Service [Member] \| Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 67,261	57,067	$ 190,863	166,817
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	$ 534,835	508,817	$ 1,583,123	1,555,547
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	$ 365,514	365,909	$ 1,091,616	1,120,090
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	$ 54,186	67,736	$ 152,495	177,680
US Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	351,042	353,758	1,059,380	1,050,274
US Operations [Member] \| Product [Member] \| Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	253,663	264,095	768,744	776,505
US Operations [Member] \| Service [Member] \| Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	72,240	68,082	219,213	210,957
US Operations [Member] \| Service [Member] \| Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	25,139	21,581	71,423	62,812
Swiss Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	53,435	50,233	157,870	143,405
Swiss Operations [Member] \| Product [Member] \| Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	42,311	40,270	125,350	113,393
Swiss Operations [Member] \| Service [Member] \| Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	7,969	7,049	23,348	21,756
Swiss Operations [Member] \| Service [Member] \| Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	3,155	2,914	9,172	8,256
Western European Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	201,837	198,520	618,915	590,019
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	135,271	135,608	423,919	406,719
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	43,250	42,663	129,289	124,659
Western European Operations [Member] \| Service [Member] \| Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	23,316	20,249	65,707	58,641
Chinese Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	164,400	162,012	471,982	569,449
Chinese Operations [Member] \| Product [Member] \| Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	147,851	147,312	425,298	522,001
Chinese Operations [Member] \| Service [Member] \| Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	11,852	10,570	33,506	34,938
Chinese Operations [Member] \| Service [Member] \| Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	4,697	4,130	13,178	12,510
Other Operations [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	183,821	177,939	519,087	500,170
Other Operations [Member] \| Product [Member] \| Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	136,497	135,326	385,510	378,965
Other Operations [Member] \| Service [Member] \| Transferred at Point in Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	36,370	34,420	102,194	96,607
Other Operations [Member] \| Service [Member] \| Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 10,954	$ 8,193	$ 31,383	$ 24,598