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Revenue Recognition - Schedule of Revenue by Reportable Operating Segment and Geography (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 27, 2025	Sep. 28, 2024	Sep. 27, 2025	Sep. 28, 2024
Disaggregation of Revenue
Revenue	$ 5,679.8	$ 5,584.4	$ 17,270.5	$ 17,591.4
North America
Disaggregation of Revenue
Revenue	2,581.0	2,403.4	7,349.1	7,431.8
Europe and Africa
Disaggregation of Revenue
Revenue	1,765.5	1,892.5	5,990.8	6,317.9
Asia
Disaggregation of Revenue
Revenue	1,082.8	1,055.0	3,299.0	3,189.1
South America
Disaggregation of Revenue
Revenue	250.5	233.5	631.6	652.6
Seating
Disaggregation of Revenue
Revenue	4,249.6	4,111.8	12,874.6	13,036.4
Seating | North America
Disaggregation of Revenue
Revenue	2,032.4	1,885.2	5,827.7	5,918.3
Seating | Europe and Africa
Disaggregation of Revenue
Revenue	1,233.1	1,327.5	4,195.1	4,493.2
Seating | Asia
Disaggregation of Revenue
Revenue	817.4	750.8	2,428.4	2,196.6
Seating | South America
Disaggregation of Revenue
Revenue	166.7	148.3	423.4	428.3
E-Systems
Disaggregation of Revenue
Revenue	1,430.2	1,472.6	4,395.9	4,555.0
E-Systems | North America
Disaggregation of Revenue
Revenue	548.6	518.2	1,521.4	1,513.5
E-Systems | Europe and Africa
Disaggregation of Revenue
Revenue	532.4	565.0	1,795.7	1,824.7
E-Systems | Asia
Disaggregation of Revenue
Revenue	265.4	304.2	870.6	992.5
E-Systems | South America
Disaggregation of Revenue
Revenue	$ 83.8	$ 85.2	$ 208.2	$ 224.3

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