CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Income Statement [Abstract]
Net Sales	$ 3,645.6	$ 3,360.3	$ 3,224.5
Cost of Sales	2,681.0	2,476.7	2,359.5
Gross Profit	964.6	883.6	865.0
Operating Expenses	599.4	552.5	542.5
Goodwill Impairment	9.5	0.0	0.0
Asset Impairments	8.7	0.0	0.0
Total Operating Expenses	617.6	552.5	542.5
Income from Operations	347.0	331.1	322.5
Other Expenses, net	1.5	1.0	1.9
Interest Expense	55.2	56.1	58.7
Interest Income	1.9	3.2	4.5
Income before Taxes	292.2	277.2	266.4
Provision for Income Taxes	56.4	59.1	57.1
Net Income	235.8	218.1	209.3
Less: Net Income Attributable to Noncontrolling Interests	4.6	5.1	5.9
Net Income Attributable to Regal Beloit Corporation	$ 231.2	$ 213.0	$ 203.4
Earnings Per Share Attributable to Regal Beloit Corporation:
Basic (in dollars per shares)	$ 5.30	$ 4.78	$ 4.55
Assuming Dilution (in dollars per share)	$ 5.26	$ 4.74	$ 4.52
Weighted Average Number of Shares Outstanding:
Basic (in shares)	43.6	44.6	44.7
Assuming Dilution (in shares)	43.9	44.9	45.0