Consolidated Statements Of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Statement of Comprehensive Income [Abstract]
Net Income	$ 58.1	$ 53.6	$ 103.1	$ 104.3
Other comprehensive income (loss) net of tax:
Foreign currency translation adjustments	3.0	(23.1)	(1.8)	(28.8)
Change in fair value of hedging activities, net of tax effects of $4.0 million and $(8.0) million for the three months ended June 28, 2014 and June 29, 2013, and $(1.3) million and $(5.6) million for the six months ended June 28, 2014 and June 29, 2013, respectively	6.5	(13.1)	(2.0)	(9.2)
Reclassification adjustment for losses included in net income, net of tax effects of $1.7 million and $0.1 million for the three months ended June 28, 2014 and June 29, 2013, and $3.2 million and $0.9 million for the six months ended June 28, 2014 and June 29, 2013, respectively	2.7	0.3	5.1	1.5
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost (Credit) Arising During Period, before Tax	(0.5)	0	(0.5)	0
Reclassification adjustments for pension benefits included in net income, net of tax effects of $0.2 and $(0.1) million for the three months ended June 28, 2014 and June 29, 2013, and $0.4 million and $0.3 million for the six months ended June 28, 2014 and June 29, 2013 respectively	0.4	(0.2)	0.7	0.6
Other comprehensive income (loss)	12.1	(36.1)	1.5	(35.9)
Comprehensive income	70.2	17.5	104.6	68.4
Less: Comprehensive income attributable to noncontrolling interest	1.6	1.9	2.2	2.7
Comprehensive Income Attributable to Regal Beloit Corporation	$ 68.6	$ 15.6	$ 102.4	$ 65.7