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Stockholders' Equity (Common Stock, Narrative) (Details) - USD ($) | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2022 | Mar. 31, 2019 | Jan. 29, 2022 | May 31, 2021
Stockholders' Equity Note [Abstract] |  |  |  |
Stock repurchased program period | 2 years | 2 years |  |
Stock repurchase program, approved amount | $ 1,900,000,000 | $ 2,550,000,000 |  | $ 1,500,000,000
Stock repurchase, planned amount |  | $ 1,407,000,000 | $ 650,000,000 |

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- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
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- Definition Period which shares may be purchased under a stock repurchase plan authorized by an entity's Board of Directors, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- References No definition available. + Details
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- Definition Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 + Details
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