Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Jan. 31, 2021	Feb. 02, 2020
Earnings Per Share [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share	12	12
Numerator - Basic:
Income from continuing operations	$ 1,378	$ 380
Dividends on preferred stock	(74)	(74)
Income from continuing operations attributable to common stock	1,304	306
Income (loss) from discontinued operations, net of income taxes, attributable to common stock	0	5
Net income attributable to common stock	$ 1,304	$ 311
Denominator:
Weighted-average shares outstanding - basic	407	398
Dilutive effect of equity awards	21	22
Weighted-average shares outstanding - diluted	428	420
Basic income per share:
Income per share from continuing operations (in dollars per share)	$ 3.20	$ 0.77
Income (loss) per share from discontinued operations (in dollars per share)	0	0.01
Net income per share (in dollars per share)	3.20	0.78
Diluted income per share:
Income per share from continuing operations (in dollars per share)	3.05	0.73
Income (loss) per share from discontinued operations (in dollars per share)	0	0.01
Net income per share (in dollars per share)	$ 3.05	$ 0.74