Common Stock Repurchase (Narrative) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Jan. 01, 2021	Jan. 03, 2020	Aug. 31, 2021	Nov. 30, 2017
Equity, Class of Treasury Stock [Line Items]
Common stock repurchased during period	$ 180.0	$ 81.6	$ 179.8
Retained Earnings
Equity, Class of Treasury Stock [Line Items]
Common stock repurchased during period	$ 164.3	$ 68.6	$ 149.1
2017 and 2021 Stock Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Common stock repurchased during period (in shares)	2.1
Common stock repurchased average price (in dollars per share)	$ 85.75
Common stock repurchased during period	$ 180.0
2017 Stock Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program authorized amount					$ 600.0
Stock repurchase program, remaining authorized fund				$ 50.7
Common stock repurchased during period (in shares)		1.9	4.7
Common stock repurchased average price (in dollars per share)		$ 43.40	$ 38.51
Common stock repurchased during period		$ 81.6	$ 179.8
2021 Stock Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program authorized amount				$ 750.0
Stock repurchase program, remaining authorized fund	$ 610.0