Accounting Policies (Schedule of Earnings (Loss) Per Share) (Details) - shares shares in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Jan. 01, 2022
Accounting Policies [Abstract]
Shares excluded from the calculation of the effect of dilutive securities (in shares)	0.4	0.2	0.1
Denominator for basic earnings per share (in shares)	66.3	66.7	47.3
Effect of dilutive securities (in shares)		0.4	0.4
Denominator for diluted earnings per share (in shares)	66.3	67.1	47.7