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Revenue Recognition - Summary of Revenue by Reportable Operating Segment and Geography (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018
Disaggregation of Revenue [Line Items]
Revenues from external customers	$ 4,825.0	$ 4,891.6	$ 14,992.7	$ 16,206.1
North America
Disaggregation of Revenue [Line Items]
Revenues from external customers	1,877.0	1,780.3	5,625.5	5,819.2
Europe and Africa
Disaggregation of Revenue [Line Items]
Revenues from external customers	1,786.9	1,944.8	5,957.7	6,766.5
Asia
Disaggregation of Revenue [Line Items]
Revenues from external customers	980.3	989.4	2,901.8	3,053.0
South America
Disaggregation of Revenue [Line Items]
Revenues from external customers	180.8	177.1	507.7	567.4
Seating
Disaggregation of Revenue [Line Items]
Revenues from external customers	3,715.0	3,683.0	11,468.1	12,287.6
Seating | North America
Disaggregation of Revenue [Line Items]
Revenues from external customers	1,626.5	1,524.0	4,815.5	4,975.2
Seating | Europe and Africa
Disaggregation of Revenue [Line Items]
Revenues from external customers	1,291.2	1,392.5	4,307.0	4,882.8
Seating | Asia
Disaggregation of Revenue [Line Items]
Revenues from external customers	667.6	638.6	1,978.2	1,993.1
Seating | South America
Disaggregation of Revenue [Line Items]
Revenues from external customers	129.7	127.9	367.4	436.5
E-Systems
Disaggregation of Revenue [Line Items]
Revenues from external customers	1,110.0	1,208.6	3,524.6	3,918.5
E-Systems | North America
Disaggregation of Revenue [Line Items]
Revenues from external customers	250.5	256.3	810.0	844.0
E-Systems | Europe and Africa
Disaggregation of Revenue [Line Items]
Revenues from external customers	495.7	552.3	1,650.7	1,883.7
E-Systems | Asia
Disaggregation of Revenue [Line Items]
Revenues from external customers	312.7	350.8	923.6	1,059.9
E-Systems | South America
Disaggregation of Revenue [Line Items]
Revenues from external customers	$ 51.1	$ 49.2	$ 140.3	$ 130.9

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

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