Net Earnings Per Common Share From Continuing Operations (Narrative) (Details) - USD ($) shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Oct. 01, 2021	Oct. 02, 2020	Oct. 01, 2021	Oct. 02, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Mandatory convertible preferred stock dividends	$ (41)	$ (41)	$ (123)	$ (95)
Incremental common shares attributable to dilutive effect of conversion of preferred stock	0	0	11,000	0
Preferred stock series A
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount	11,000
Mandatory convertible preferred stock dividends	$ (19)		$ (59)
Incremental common shares attributable to dilutive effect of conversion of preferred stock			11,000
Preferred stock series B
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount	8,600		8,600
Mandatory convertible preferred stock dividends	$ (22)		$ (64)
Common stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount	0	0	88	1,000
Preferred stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount		19,600		16,300