Consolidated Statements Of Comprehensive Income (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jan. 03, 2015	Dec. 28, 2013	Dec. 29, 2012
Net Income	$ 36.1	$ 126.0	$ 200.3
Other Comprehensive Income (Loss) net of tax:
Currency translation adjustments	(55.5)	(22.2)	14.7
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax	(1.0)	0	0
Change in fair value of hedging activities, net of tax effects of $(27,405) in 2011, $11,045 in 2010 and $18,844 in 2009	(27.6)	(1.1)	16.6
Hedging Activities Reclassified into Earnings from Other Comprehensive Income, net of tax effects of $(5,458) in 2011, $1,976 in 2010 and $30,455 in 2009	6.1	9.0	16.8
Other Comprehensive Income (Loss), Reclassification Adjustment on Derivatives Included in Net Income, Net of Tax	(21.5)	7.9	33.4
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Prior Service Cost Arising During Period, before Tax	(17.6)	16.0	(9.9)
Other Comprehensive Income (Loss), Amortization, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost Recognized in Net Periodic Pension Cost, Net of Tax	1.4	2.6	2.4
Other Comprehensive Income (Loss), Amortization, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost (Credit) Recognized in Net Periodic Benefit Cost, before Tax	(16.2)	18.6	(7.5)
Other Comprehensive Income (Loss)	(94.2)	4.3	40.6
Comprehensive Income Attributable to Regal Beloit Corporation	(58.1)	130.3	240.9
Less: Comprehensive Income Attributable to Noncontrolling Interests	2.1	5.9	5.4
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ (60.2)	$ 124.4	$ 235.5