Condensed Consolidated Statements Of Income (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Apr. 02, 2016	Apr. 04, 2015
Income Statement [Abstract]
Net Sales	$ 818.2	$ 911.7
Cost of Sales	600.8	690.8
Gross Profit	217.4	220.9
Operating Expenses	148.1	157.3
Income From Operations	69.3	63.6
Interest Expense	15.0	13.6
Interest Income	1.1	1.2
Income Before Taxes	55.4	51.2
Provision For Income Taxes	12.7	13.3
Net Income	42.7	37.9
Less: Net Income Attributable to Noncontrolling Interests	1.1	1.5
Net Income Attributable to Regal Beloit Corporation	$ 41.6	$ 36.4
Earnings Per Share Attributable to Regal Beloit Corporation:
Basic (in dollars per share)	$ 0.93	$ 0.81
Assuming Dilution (in dollars per share)	0.93	0.81
Cash Dividends Declared Per Share (in dollars per share)	$ 0.23	$ 0.22
Weighted Average Number of Shares Outstanding:
Basic (in shares)	44.7	44.7
Assuming Dilution (in shares)	45.0	45.1