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Share-Based Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions |  | 12 Months Ended
--- | --- | ---
Jul. 29, 2019 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share-based compensation expense |  |  | $ 369 | $ 229 | $ 73
Unrecognized compensation cost |  |  | $ 276 |  |
Weighted-average period unrecognized compensation cost will be recognized |  |  | 2 years 1 month 6 days |  |
Share-based awards, stock options, exercised (in shares) |  |  | 2,636,000 |  |
Weighted-average estimated fair value per share of stock options granted (in dollars per share) |  |  | $ 35.02 | $ 28.52 | $ 22.48
Share-based awards available for grant (in shares) |  |  | 30,500,000 |  |
First Data |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Entity shares issued per acquiree share (in shares) | 0.303 |  |  |  |
Stock price achievement of common stock (in dollars per share) | $ 32 |  |  |  |
First Data | Equity Awards |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Unrecognized compensation cost | $ 467 |  |  |  |
Weighted-average period unrecognized compensation cost will be recognized | 1 year 2 months 12 days |  |  |  |
Consideration transferred, equity value | $ 768 |  |  |  |
Stock options |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Period that awards will expire (in years) |  |  | 10 years |  |
Share-based awards, stock options, exercised (in shares) |  |  | 2,600,000 | 4,700,000 | 2,700,000
Stock options | Minimum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period (in years) |  |  | 3 years |  |
Stock options | Maximum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period (in years) |  |  | 4 years |  |
Restricted Stock Units | Minimum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period (in years) |  |  | 3 years |  |
Restricted Stock Units | Maximum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period (in years) |  |  | 4 years |  |
Restricted Stock Awards | Minimum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period (in years) |  |  | 3 years |  |
Restricted Stock Awards | Maximum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Vesting period (in years) |  |  | 4 years |  |
Employee stock purchase plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Compensation expense recognized related to discount on purchase date (as a percent) |  |  | 10.00% | 15.00% |
Share-based awards available for grant (in shares) |  |  | 24,200,000 |  |
Shares issued under equity plan (in shares) |  |  | 500,000 | 600,000 | 700,000
Employee stock purchase plan | Subsequent Event |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Compensation expense recognized related to discount on purchase date (as a percent) |  | 5.00% |  |  |

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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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