Condensed Consolidated Statements Of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2013		Mar. 31, 2012
Cash Flows from Operating Activities:
Consolidated net income	$ 116.9		$ 144.4
Adjustments to reconcile consolidated net income to net cash provided by operating activities:
Depreciation and amortization	66.4		53.7
Net change in recoverable customer engineering, development and tooling	20.0		(36.7)
Net change in working capital items (see below)	(159.6)		(159.3)
Other, net	20.1		2.1
Net cash provided by operating activities	63.8		4.2
Cash Flows from Investing Activities:
Additions to property, plant and equipment	(98.7)		(70.3)
Insurance proceeds	7.1		1.0
Other, net	51.3		4.9
Net cash used in investing activities	(40.3)		(64.4)
Cash Flows from Financing Activities:
Proceeds from the issuance of senior notes	500.0
Repurchase of senior notes	(72.1)
Payment of debt issuance and other financing costs	(13.4)
Repurchase of common stock	(200.1)		(52.5)
Dividends paid to Lear Corporation stockholders	(16.2)		(13.8)
Dividends paid to noncontrolling interests	(3.9)		(3.2)
Other	(5.1)		(3.2)
Net cash provided by (used in) financing activities	189.2		(72.7)
Effect of foreign currency translation	(13.6)		9.5
Net Change in Cash and Cash Equivalents	199.1		(123.4)
Cash and Cash Equivalents as of Beginning of Period	1,402.2		1,754.3
Cash and Cash Equivalents as of End of Period	1,601.3	[1]	1,630.9
Changes in Working Capital Items:
Accounts receivable	(432.4)		(456.8)
Inventories	(76.3)		(68.1)
Accounts payable	288.2		309.9
Accrued liabilities and other	60.9		55.7
Net change in working capital items	(159.6)		(159.3)
Supplementary Disclosure:
Cash paid for interest	26.5		28.8
Cash paid for income taxes	$ 28.4		$ 13.3

[1] Unaudited.