Stockholders' Equity (Tables)

3 Months Ended

Apr. 30, 2019

Equity [Abstract]

Share-based Compensation, Stock Options, Activity

Stock option activity for the three months ended April 30, 2019 is as follows:

	Options Outstanding
	Outstanding Stock Options (in millions)		Weighted- Average Exercise Price		Aggregate Intrinsic Value (in millions)
Balance as of January 31, 2019	26		$	74.15
Options granted under all plans	5		161.44
Exercised	(2	)	52.47
Balance as of April 30, 2019	29		$	92.92	$	2,126
Vested or expected to vest	27		$	89.62	$	2,046
Exercisable as of April 30, 2019	13		$	63.88	$	1,354

Schedule Of Stock Options Outstanding

The following table summarizes information about stock options outstanding as of April 30, 2019:

	Options Outstanding				Options Exercisable
Range of Exercise Prices	Number Outstanding (in millions)	Weighted- Average Remaining Contractual Life (Years)	Weighted- Average Exercise Price		Number of Shares (in millions)	Weighted- Average Exercise Price
$0.27 to $52.30	5	4.5	$	29.30	4	$	32.78
$54.36 to $75.57	8	3.8	67.92		5	65.34
$76.48 to $113.00	4	4.0	84.47		3	82.67
$118.04	5	5.9	118.04		1	118.04
$122.03 to $158.76	1	6.3	135.29		0	0.00
$161.50	6	6.9	161.50		0	0.00
	29	5.0	$	92.92	13	$	63.88

Schedule Of Restricted Stock Activity

Restricted stock activity for the three months ended April 30, 2019 is as follows:

	Restricted Stock Outstanding
	Outstanding (in millions)		Weighted Average Grant Date Fair Value		Aggregate Intrinsic Value (in millions)
Balance as of January 31, 2019	21		$	103.33
Granted - restricted stock units and awards	7		161.39
Granted - performance-based stock units	1		161.50
Canceled	(1	)	102.06
Vested and converted to shares	(3	)	102.19
Balance as of April 30, 2019	25		$	121.88	$	4,136
Expected to vest	21				$	3,502