Stock Repurchases - Narrative (Details) - Stock Repurchase Program 2011 - shares	244 Months Ended
Jan. 31, 2022	Sep. 22, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock repurchase program additional number of shares authorized approved (in shares)		80,000,000
Stock repurchased (in shares)	114,549,198
Number of shares available for repurchase under stock repurchase program (in shares)	81,450,802
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock authorized for repurchase (in shares)		196,000,000

The number additional shares approved under company's stock repurchase program by the entity's board of directors.

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

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- Definition

The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

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- Definition

Number of shares that have been repurchased and retired during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 210
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