Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Statement of Comprehensive Income [Abstract]
Net Income	$ 209.3	$ 148.5	$ 36.1
Translation:
Foreign Currency Translation Adjustments	(68.2)	(94.5)	(55.5)
Reclassification of Foreign Currency Translation Adjustments Included in Net Income, Net of Immaterial Tax Effects	0.0	0.0	(1.0)
Hedging Activities:
Decrease in Fair Value of Hedging Activities, Net of Tax Effects of $(15.2) Million in 2016, $(26.6) Million in 2015 and $(16.9) Million in 2014	(24.8)	(43.3)	(27.6)
Reclassification of Losses Included in Net Income, Net of Tax Effects of $19.1 Million in 2016, $16.5 Million in 2015, and $3.7 Million in 2014	31.2	26.8	6.1
Hedging Activities	6.4	(16.5)	(21.5)
Pension and Post Retirement Plans:
Decrease (Increase) in Prior Service Cost and Unrecognized Gain (Loss), Net of Tax Effects of $(1.5) Million in 2016, $1.8 Million in 2015 and $(10.2) Million in 2014	(2.8)	1.2	(17.6)
Amortization of Prior Service Cost and Unrecognized Loss Included in Net Periodic Pension Cost, Net of Tax Effects of $1.2 Million in 2016, $1.6 Million in 2015 and $1.1 Million in 2014	2.2	2.9	1.4
Amortization of Prior Service Cost and Unrecognized Loss Included in Net Periodic Pension Cost, Net of Tax Effects of $1.2 Million in 2016, $1.6 Million in 2015 and $1.1 Million in 2014	(0.6)	4.1	(16.2)
Other Comprehensive Income (Loss)	(62.4)	(106.9)	(94.2)
Comprehensive Income (Loss)	146.9	41.6	(58.1)
Less: Comprehensive Income Attributable to Noncontrolling Interest	3.9	2.3	2.1
Comprehensive Income (Loss)Attributable to Regal Beloit Corporation	$ 143.0	$ 39.3	$ (60.2)