Shareholders' Equity (Schedule Of Share-Based Incentive Plan Grant Activity) (Details) - Options and SAR's $ / shares in Units, $ in Millions	12 Months Ended
	Jan. 01, 2022 USD ($) $ / shares shares
Shares
Shares Outstanding, Beginning Balance (in shares)	577,509
Shares, Granted (in shares)	438,682
Shares, Exercised (in shares)	(149,055)
Shares, Forfeited (in shares)	(51,180)
Shares, Expired (in shares)	(4,050)
Shares Outstanding, Ending Balance (in shares)	811,906
Shares, Exercisable, Ending Balance (in shares)	402,807
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted Average Exercise Price. Beginning Balance (in dollars per share) | $ / shares	$ 79.35
Weighted Average Exercise Price, Granted (in dollars per share) | $ / shares	86.52
Weighted Average Exercise Price, Exercised (in dollars per share) | $ / shares	73.48
Weighted Average Exercise Price, Forfeited (in dollars per share) | $ / shares	92.07
Weighted Average Exercise Price, Expired (in dollars per share) | $ / shares	72.29
Weighted Average Exercise Price, Ending Balance (in dollars per share) | $ / shares	81.50
Weighted Average Exercise Price, Exercisable, End of Period (in dollars per share) | $ / shares	$ 64.90
Outstanding Weighted Average Remaining Contractual Terms (years)	6 years 10 months 24 days
Exercisable Weighted Average Remaining Contractual Term (years)	5 years 4 months 24 days
Outstanding Aggregate Intrinsic Value | $	$ 72.0
Exercisable Aggregate Intrinsic Value | $	$ 42.4
Employees Of Rexnord PMC Business
Shares
Shares, Granted (in shares)	298,640