Condensed Consolidated Statements Of Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 28, 2014	Jun. 29, 2013	Jun. 28, 2014	Jun. 29, 2013
Income Statement [Abstract]
Net Sales	$ 850.4	$ 822.0	$ 1,651.6	$ 1,600.2
Cost of Sales	639.4	612.8	1,246.2	1,191.5
Gross Profit	211.0	209.2	405.4	408.7
Operating Expenses	123.3	128.1	248.0	251.7
Other Cost and Expense, Operating	122.3	128.1	247.0	251.7
Asset Impairment Charges	1.0	0	1.0	0
Income From Operations	87.7	81.1	157.4	157.0
Interest Expense	10.3	10.7	20.7	21.3
Interest Income	1.7	1.1	3.4	1.8
Income Before Taxes	79.1	71.5	140.1	137.5
Provision For Income Taxes	21.0	17.9	37.0	33.2
Net Income	58.1	53.6	103.1	104.3
Less: Net Income Attributable to Noncontrolling Interests	1.9	2.5	3.1	3.7
Net Income Attributable to Regal Beloit Corporation	$ 56.2	$ 51.1	$ 100.0	$ 100.6
Earnings Per Share Attributable to Regal Beloit Corporation:
Basic	$ 1.24	$ 1.14	$ 2.22	$ 2.24
Assuming Dilution	$ 1.24	$ 1.13	$ 2.20	$ 2.22
Cash Dividends Declared	$ 0.22	$ 0.20	$ 0.42	$ 0.39
Weighted Average Number of Shares Outstanding (in millions):
Basic	45.2	45.0	45.1	45.0
Assuming Dilution	45.5	45.3	45.5	45.3