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Long-Lived Assets - Narrative (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
	Sep. 06, 2021	Oct. 01, 2022	Oct. 02, 2021	Oct. 01, 2022	Oct. 02, 2021
Property, Plant and Equipment [Abstract]
Depreciation expense		$ 124.1	$ 124.6	$ 378.8	$ 374.0
Impairment of long-lived assets to be disposed of				1.7	1.0
Property, Plant and Equipment
Asset impairment charges				5.7	2.0
Impairment of long-lived assets to be disposed of				1.7	1.0
Impairment loss					1.0
Russia-Ukraine Conflict
Property, Plant and Equipment
Asset impairment charges		$ 19.9		4.4
Shenyang Jinbei Lear Auto Parts Co Ltd
Property, Plant and Equipment
Equity method investment, ownership percentage	49.00%
Payments to acquire equity method investments	$ 41.3
E-Systems
Property, Plant and Equipment
Impairment of intangible assets				$ 8.9	$ 8.5

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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.

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The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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