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Earnings Per Share - Share-based Compensation (Details) - shares | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Total exercised or released (in shares) | 34,261 | 402,996 | 1,684,039 | 1,018,595
Options |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options exercised (in shares) | 205 | 239,839 | 656,573 | 239,839
Restricted Stock Units |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options exercised (in shares) | 34,056 | 163,157 | 735,813 | 504,040
Performance Share Units |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Options exercised (in shares) | 0 | 0 | 291,653 | 274,716

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