Consolidated Statements Of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jul. 02, 2011	Jun. 30, 2012	Jul. 02, 2011
Net Income	$ 64.3	$ 36.0	$ 114.2	$ 76.8
Other Comprehensive Income (Loss)
Change in pension benefits, net of tax effects of $(0.3) million and $0.3 million for the three months ended June 30, 2012 and July 2, 2011, and $(0.9) million and $0.7 million for the six months ended June 30, 2012 and July 2, 2011, respectively	(0.6)	0.4	(1.5)	1.1
Foreign currency translation adjustments	(30.4)	7.9	(6.7)	18.6
Change in fair value of hedging activities, net of tax effects of $(15.3) million and $(0.5) million for the three months ended June 30, 2012 and July 2, 2011, and $5.6 million and $1.0 million for the six months ended June 30, 2012 and July 2, 2011, respectively	(25.5)	(0.9)	9.1	1.7
Hedging activities reclassified into earnings from Other Comprehensive Income (Loss), net of tax effects of $2.1 million and $(3.2) million for the three months ended June 30, 2012 and July 2, 2011, and $5.6 million and $(5.3) million for the six months ended June 30, 2012 and July 2, 2011, respectively.	3.2	(5.1)	9.1	(8.7)
Total Other Comprehensive Income (Loss)	(53.3)	2.3	10.0	12.7
Comprehensive Income	11.0	38.3	124.2	89.5
Less: Comprehensive Income Attributable to Noncontrolling Interests	0.7	1.9	2.4	3.3
Comprehensive Income Attributable to Regal Beloit Corporation	$ 10.3	$ 36.4	$ 121.8	$ 86.2