Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Sep. 29, 2012	Oct. 01, 2011
Net sales	$ 3,538.6	$ 3,460.0	$ 10,847.6	$ 10,648.0
Cost of sales	3,247.3	3,179.5	9,931.9	9,697.5
Selling, general and administrative expenses	113.4	114.9	346.8	351.6
Amortization of intangible assets	8.3	7.1	22.5	21.1
Interest expense	13.7	10.9	40.2	24.9
Other expense, net	1.5	10.1	12.0	15.3
Consolidated income before income taxes and equity in net income of affiliates and subsidiaries	154.4	137.5	494.2	537.6
Provision for income taxes	29.3	31.0	100.4	90.7
Equity in net income of affiliates	(3.0)	(1.6)	(33.3)	(9.6)
Consolidated net income	128.1	108.1	427.1	456.5
Less: Net income attributable to noncontrolling interests	6.7	7.4	26.2	22.3
Net income attributable to Lear	121.4	100.7	400.9	434.2
Basic net income per share attributable to Lear	$ 1.25	$ 0.97	$ 4.05	$ 4.16
Diluted net income per share attributable to Lear	$ 1.23	$ 0.95	$ 3.99	$ 4.05
Consolidated comprehensive income (loss) (Note 13)	174.3	(61.3)	461.1	398.9
Less: Comprehensive income attributable to noncontrolling interests	7.9	7.8	26.5	24.2
Comprehensive income (loss) attributable to Lear	$ 166.4	$ (69.1)	$ 434.6	$ 374.7