Consolidated Statements Of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012
Statement of Other Comprehensive Income [Abstract]
Net Income	$ 53.6	$ 64.3	$ 104.3	$ 114.2
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustments	(23.1)	(30.4)	(28.8)	(6.7)
Change in fair value of hedging activities, net of tax effects of $(8.0) million and $(15.3) million for the three months ended June 29, 2013 and June 30, 2012, and $(5.6) million and $5.6 million for the six months ended June 29, 2013 and June 30, 2012, respectively	(13.1)	(25.5)	(9.2)	9.1
Reclassification adjustment for losses included in net income, net of tax effects of $0.1 million and $2.1 million for the three months ended June 29, 2013 and June 30, 2012, and $0.9 million and $5.6 million for the six months ended June 29, 2013 and June 30, 2012, respectively	0.3	3.2	1.5	9.1
Reclassification adjustments for pension benefits included in net income, net of tax effects of $(0.1) and $(0.3) million for the three months ended June 29, 2013 and June 30, 2012, and $0.3 million and $(0.9) million for the six months ended June 29, 2013 and June 30, 2012, respectively	(0.2)	(0.6)	0.6	(1.5)
Other Comprehensive Income (Loss)	(36.1)	(53.3)	(35.9)	10.0
Comprehensive Income	17.5	11.0	68.4	124.2
Less: Comprehensive Income Attributable to Noncontrolling Interests	1.9	0.7	2.7	2.4
Comprehensive Income Attributable to Regal Beloit Corporation	$ 15.6	$ 10.3	$ 65.7	$ 121.8