Summary of Segment Financial Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2013		Mar. 31, 2012		Dec. 31, 2012
Segment Reporting Information [Line Items]
Revenues from external customers	$ 3,947.1		$ 3,644.0
Segment earnings	174.2	[1]	186.8	[1]
Depreciation and amortization	66.4		53.7
Capital expenditures	98.7		70.3
Total assets	8,824.2	[2]	7,536.0		8,194.1
Seating
Segment Reporting Information [Line Items]
Revenues from external customers	2,911.7		2,813.8
Segment earnings	141.4	[1]	185.8	[1]
Depreciation and amortization	42.6		33.5
Capital expenditures	67.5		42.4
Total assets	4,744.1		4,247.9
EPMS
Segment Reporting Information [Line Items]
Revenues from external customers	1,035.4		830.2
Segment earnings	89.0	[1]	52.6	[1]
Depreciation and amortization	21.9		18.2
Capital expenditures	30.3		25.4
Total assets	1,565.0		1,389.3
Corporate and regional headquarters and elimination of intercompany activity ("Other")
Segment Reporting Information [Line Items]
Segment earnings	(56.2)	[1]	(51.6)	[1]
Depreciation and amortization	1.9		2.0
Capital expenditures	0.9		2.5
Total assets	$ 2,515.1		$ 1,898.8

[1] See definition above

[2] Unaudited.