Condensed Consolidated Statements of Comprehensive Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Net sales	$ 3,917.7	$ 3,538.6	$ 11,977.9	$ 10,847.6
Cost of sales	3,587.5	3,247.3	10,997.6	9,931.9
Selling, general and administrative expenses	128.6	113.4	386.1	346.8
Amortization of intangible assets	8.6	8.3	25.8	22.5
Interest expense	17.5	13.7	51.6	40.2
Other expense, net	16.8	1.5	37.8	12.0
Consolidated income before provision for income taxes and equity in net income of affiliates	158.7	154.4	479.0	494.2
Provision for income taxes	51.2	29.3	130.2	100.4
Equity in net income of affiliates	(9.2)	(3.0)	(27.1)	(33.3)
Consolidated net income	116.7	128.1	375.9	427.1
Less: Net income attributable to noncontrolling interests	3.9	6.7	17.3	26.2
Net income attributable to Lear	112.8	121.4	358.6	400.9
Basic net income per share attributable to Lear	$ 1.40	$ 1.25	$ 4.14	$ 4.05
Diluted net income per share attributable to Lear	$ 1.38	$ 1.23	$ 4.09	$ 3.99
Consolidated comprehensive income (Note 12)	148.3	174.3	356.7	461.1
Less: Comprehensive income attributable to noncontrolling interests	4.1	7.9	18.2	26.5
Comprehensive income attributable to Lear	$ 144.2	$ 166.4	$ 338.5	$ 434.6