Shareholders' Equity (Rollforward of Activity by Award Type) (Details) shares in Thousands	12 Months Ended
	Jan. 31, 2023 $ / shares shares
Restricted stock units
Shares
Beginning balance (in shares) | shares	17,283
Granted (in shares) | shares	9,357
Adjustment for performance achievement (in shares) | shares	0
Vested/exercised (in shares) | shares	(8,338)
Forfeited (in shares) | shares	(2,082)
Ending balance (in shares) | shares	16,220
Weighted-Average Grant-Date Fair Value Per Share
Beginning balance (in USD per share) | $ / shares	$ 111.42
Granted (in USD per share) | $ / shares	143.97
Adjustment for performance achievement (in USD per share) | $ / shares	0
Vested/exercised (in USD per share) | $ / shares	111.69
Forfeited (in USD per share) | $ / shares	127.36
Ending balance (in USD per share) | $ / shares	$ 128.01
Restricted stock and performance-based restricted stock units
Shares
Beginning balance (in shares) | shares	6,140
Granted (in shares) | shares	4,572
Adjustment for performance achievement (in shares) | shares	638
Vested/exercised (in shares) | shares	(3,242)
Forfeited (in shares) | shares	(948)
Ending balance (in shares) | shares	7,160
Weighted-Average Grant-Date Fair Value Per Share
Beginning balance (in USD per share) | $ / shares	$ 125.25
Granted (in USD per share) | $ / shares	142.74
Adjustment for performance achievement (in USD per share) | $ / shares	132.00
Vested/exercised (in USD per share) | $ / shares	120.18
Forfeited (in USD per share) | $ / shares	128.68
Ending balance (in USD per share) | $ / shares	$ 138.86