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SEGMENT INFORMATION
 6 Months Ended
Jul. 03, 2026
Segment Reporting [Abstract]  
SEGMENT INFORMATION
NOTE 10. SEGMENT INFORMATION
Ralliant reports its results in two reportable segments that are also its two operating segments, consisting of Sensors and Safety Systems and Test and Measurement. Ralliant’s operating segments were determined based primarily on how the chief operating decision maker (“CODM”) views and evaluates the Company’s operations. Other factors including products and services, end markets served, and business cycle were also considered in determining the formation of operating segments. The Company's CODM is the chief executive officer.
The CODM uses operating profit at the segment level as the measure of profitability to assess performance and allocate resources, including merger and acquisition targets. The CODM also compares the actual results to expectations in assessing the performance of the segments. Operating profit represents total revenue, less cost of sales, and operating expenses. Operating expenses generally include Selling, general, and administrative expenses and Research and development expenses, which are the significant expense categories regularly provided to the CODM. Depreciation expense is recorded within both Cost of sales and Selling, general, and administrative expenses. Amortization expense is recorded within Selling, general, and administrative expenses. Goodwill impairment, when incurred, is also separately disclosed by segment. The identifiable assets by segment are those used in each segment’s operations. Inter-segment amounts are not significant and are eliminated in the consolidated and combined totals. Unallocated costs and other costs are not considered part of the Company’s evaluation of reportable segment operating performance.
The Sensors and Safety Systems segment provides leading power grid monitoring solutions, safety systems for mission critical aero, defense, and space applications, and sensing solutions for critical environments where uptime, precision, and reliability are essential. This includes advanced monitoring, protection, and diagnostic solutions for high-voltage electrical assets in power generation, transmission, and distribution. Sensors and Safety Systems’ energetic materials, ignition safety systems, and precision pyrotechnic devices are used in mission-critical applications such as satellite deployment, rocket propulsion initiation, aerial vehicle safety systems, and military defense systems. The Sensors and Safety Systems segment also provides premium sensing products encompassing liquid level, flow, and pressure sensors, motion sensors and components, and hygienic sensors.
The Test and Measurement segment provides precision test and measurement instruments, systems, and services. Through its portfolio of industry leading solutions, including oscilloscopes, probes, source measuring units, semiconductor test systems, high-power bi-directional power supplies, and measurement analysis software packages, the Test and Measurement segment empowers scientists, engineers, and technicians to create and realize technological advances with greater efficiency, speed, and accuracy.
Segment results for the three months ended July 3, 2026 were:
 TotalSensors and Safety SystemsTest and Measurement
Unallocated Corporate Costs and Other(a)
Sales$567.8 $346.5 $221.3 $— 
Cost of sales(274.9)(178.3)(96.6)— 
Operating expenses(210.7)(69.7)(119.3)(21.7)
Operating profit (loss)82.2 98.5 5.4 (21.7)
Non-operating expense, net:
Interest (expense) income, net(13.8)(0.1)0.5 (14.2)
Other non-operating income (expense), net0.1 — 0.6 (0.5)
Earnings (loss) before income taxes$68.5 $98.4 $6.5 $(36.4)
Depreciation and amortization expenses$(30.1)$(3.4)$(26.5)$(0.2)
Capital expenditures$(6.4)$(2.9)$(3.5)$— 
(a) Operating expenses primarily related to standalone public company costs.
Segment results for the three months ended June 27, 2025 were:
 TotalSensors and Safety SystemsTest and Measurement
Unallocated Corporate Costs and Other(a)
Sales$503.3 $310.8 $192.5 $— 
Cost of sales(255.0)(165.8)(89.2)— 
Operating expenses(189.4)(65.5)(117.6)(6.3)
Operating profit (loss)58.9 79.5 (14.3)(6.3)
Non-operating expense, net:
Other non-operating (expense) income, net— (0.1)0.1 — 
Earnings (loss) before income taxes$58.9 $79.4 $(14.2)$(6.3)
Depreciation and amortization expenses$(28.6)$(3.5)$(25.1)$— 
Capital expenditures$(11.6)$(4.5)$(7.1)$— 
(a) Operating expenses primarily related to standalone public company costs.
Segment results for the six months ended July 3, 2026 were:
 TotalSensors and Safety SystemsTest and Measurement
Unallocated Corporate Costs and Other(a)
Sales$1,102.3 $670.8 $431.5 $— 
Cost of sales(537.1)(347.7)(189.4)— 
Operating expenses(414.9)(135.8)(240.0)(39.1)
Operating profit (loss)150.3 187.3 2.1 (39.1)
Non-operating expense, net:
Interest (expense) income, net(28.4)(0.2)0.9 (29.1)
Other non-operating (expense) income, net(0.4)— 0.6 (1.0)
Earnings (loss) before income taxes$121.5 $187.1 $3.6 $(69.2)
Depreciation and amortization expenses$(59.7)$(6.7)$(52.8)$(0.2)
Capital expenditures$(15.1)$(9.1)$(5.9)$(0.1)
(a) Operating expenses primarily related to standalone public company costs.
Segment results for the six months ended June 27, 2025 were:
 TotalSensors and Safety SystemsTest and Measurement
Unallocated Corporate Costs and Other(a)
Sales$985.1 $604.1 $381.0 $— 
Cost of sales(493.4)(317.2)(176.2)— 
Operating expenses(359.0)(120.4)(231.0)(7.6)
Operating profit (loss)132.7 166.5 (26.2)(7.6)
Non-operating expense, net:
Other non-operating expense, net(0.5)(0.3)(0.2)— 
Earnings (loss) before income taxes$132.2 $166.2 $(26.4)$(7.6)
Depreciation and amortization expenses$(55.5)$(6.9)$(48.6)$— 
Capital expenditures$(17.2)$(7.2)$(10.0)$— 
(a) Operating expenses primarily related to standalone public company costs.
Segment Assets:
July 3, 2026December 31, 2025
Sensors and Safety Systems$1,333.0 $1,306.4 
Test and Measurement2,054.0 2,149.3 
Total segment assets3,387.0 3,455.7 
Other (a)
318.7 365.9 
Total assets$3,705.7 $3,821.6 
(a) Other represents corporate assets which consist primarily of cash and income tax assets.