Investments in Affiliates and Other Related Party Transactions - Beneficial Ownership in Affiliates Accounted for under Equity Method (Details)	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Beijing BHAP Lear Automotive Systems Co., Ltd. (China)
Schedule of Equity Method Investments
Ownership percentage of affiliates	50.00%	50.00%	50.00%
Guangzhou Lear Automotive Components Co., Ltd. (China)
Schedule of Equity Method Investments
Ownership percentage of affiliates	50.00%	50.00%	50.00%
Jiangxi Jiangling Lear Interior Systems Co., Ltd. (China)
Schedule of Equity Method Investments
Ownership percentage of affiliates	50.00%	50.00%	50.00%
Lear Dongfeng Automotive Seating Co., Ltd. (China)
Schedule of Equity Method Investments
Ownership percentage of affiliates	50.00%	50.00%	50.00%
Beijing Lear Hyundai Transys Co., Ltd. (China)
Schedule of Equity Method Investments
Ownership percentage of affiliates	50.00%	40.00%	40.00%
Changchun Lear FAWSN Automotive Seat Systems Co., Ltd. (China)
Schedule of Equity Method Investments
Ownership percentage of affiliates	49.00%	49.00%	49.00%
Honduras Electrical Distribution Systems S. de R.L. de C.V. (Honduras)
Schedule of Equity Method Investments
Ownership percentage of affiliates	49.00%	49.00%	49.00%
Kyungshin-Lear Sales and Engineering LLC
Schedule of Equity Method Investments
Ownership percentage of affiliates	49.00%	49.00%	49.00%
Shenyang Jinbei Lear Automotive Seating Co. Ltd. (China)
Schedule of Equity Method Investments
Ownership percentage of affiliates	49.00%	49.00%	0.00%
Shenzen Shinry Lear Electric Control Technology Co., Ltd. (China)
Schedule of Equity Method Investments
Ownership percentage of affiliates	49.00%	0.00%	0.00%
Hyundai Transys Lear Automotive Private Limited (India)
Schedule of Equity Method Investments
Ownership percentage of affiliates	35.00%	35.00%	35.00%
Techstars Corporate Partner 2017 LLC
Schedule of Equity Method Investments
Ownership percentage of affiliates	34.00%	34.00%	34.00%
RevoLaze, LLC
Schedule of Equity Method Investments
Ownership percentage of affiliates	20.00%	20.00%	20.00%
Maniv Mobility II A, L.P.
Schedule of Equity Method Investments
Ownership percentage of affiliates	7.00%	7.00%	9.00%
Trucks Venture Fund 2, L.P.
Schedule of Equity Method Investments
Ownership percentage of affiliates	7.00%	5.00%	3.00%
Autotech Fund II, L.P.
Schedule of Equity Method Investments
Ownership percentage of affiliates	3.00%	4.00%	4.00%