Equity - Unvested RSA & RSU Rollforward (Details) - $ / shares shares in Thousands	12 Months Ended
Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Equity-Classified Restricted Stock Units (RSUs)
Number of Shares (in thousands)
Unvested balance, beginning (in shares)	15,560	9,612	9,348
Granted (in shares)	12,706	10,788	4,026
Vested (in shares)	(6,810)	(3,348)	(3,186)
Forfeited (in shares)	(1,881)	(1,492)	(576)
Unvested balance, ending (in shares)	19,575	15,560	9,612
Weighted-Average Grant Date Fair Value per Share
Unvested balance , beginning balance (in dollars per share)	$ 181.17	$ 180.08	$ 125.06
Granted (in dollars per share)	158.28	180.65	250.46
Vested (in dollars per share)	172.38	165.30	109.44
Forfeited (in dollars per share)	176.44	206.02	169.74
Unvested balance , ending balance (in dollars per share)	$ 169.82	$ 181.17	$ 180.08
2020 Plan \| Equity-Classified Performance Shares
Number of Shares (in thousands)
Granted (in shares)	500
2020 Plan \| Liability-Classified Performance Shares
Number of Shares (in thousands)
Unvested balance, beginning (in shares)	0
Granted (in shares)	1,382
Unvested balance, ending (in shares)	1,382	0
Outside of the Plans \| Restricted Common Stock
Number of Shares (in thousands)
Unvested balance, beginning (in shares)	428	380	742
Granted (in shares)	385	409
Vested (in shares)	(142)	(361)	(362)
Unvested balance, ending (in shares)	671	428	380
Weighted-Average Grant Date Fair Value per Share
Unvested balance , beginning balance (in dollars per share)	$ 219.26	$ 2.11	$ 2.11
Granted (in dollars per share)	194.28	229.13
Vested (in dollars per share)	199.28	2.10	2.10
Unvested balance , ending balance (in dollars per share)	$ 209.15	$ 219.26	$ 2.11

Share-Based Compensation Arrangement By Share-Based Payment Award, Liability-Classified Instruments, Grants In Period

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- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Liability-Classified Instruments, Nonvested, Number

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(ii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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