Consolidated Statements Of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Statement of Other Comprehensive Income [Abstract]
Net Income	$ 54.5	$ 55.2	$ 158.8	$ 169.4
Other Comprehensive Income (Loss):
Foreign Currency Translation Adjustments	6.4	20.0	(22.4)	13.3
Change in fair value of hedging activities, net of tax effects of $2.6 million and $6.2 million for the three months ended September 28, 2013 and September 29, 2012, and $(3.0) million and $11.8 million for the nine months ended September 28, 2013 and September 29, 2012, respectively	4.4	10.2	(4.8)	19.3
Reclassification adjustment for losses included in net income, net of tax effects of $2.5 million and $3.0 million for the three months ended September 28, 2013 and September 29, 2012 and $3.4 million and $8.6 million for the nine months ended September 28, 2013 and September 29, 2012, respectively	4.0	4.9	5.5	14.0
Reclassification adjustments for pension benefits included in net income, net of tax effects of $0.4 and $2.4 million for the three months ended September 28, 2013 and September 29, 2012, and $0.7 million and $1.5 million for the nine months ended September 28, 2013 and September 29, 2012, respectively	0.5	3.9	1.1	2.4
Other Comprehensive Income (Loss)	15.3	39.0	(20.6)	49.0
Comprehensive Income	69.8	94.2	138.2	218.4
Less: Comprehensive Income Attributable to Noncontrolling Interests	2.8	1.7	5.5	4.1
Comprehensive Income Attributable to Regal Beloit Corporation	$ 67.0	$ 92.5	$ 132.7	$ 214.3