Changes in Equity - Additional Information (Details) - $ / shares |
3 Months Ended | ||
|---|---|---|---|
Mar. 31, 2021 |
Mar. 31, 2020 |
Jan. 11, 2021 |
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| Class of Stock [Line Items] | 听 | 听 | 听 |
| Cash dividends per Sub-share Certificate (in dollars per share) | $ 2.75 | $ 16.00 | 听 |
| Common stock and sub-share certificates of proprietary interest, par value (in dollars per share) | 0.01 | 听 | $ 0.01 |
| Sub shares | 听 | 听 | 听 |
| Class of Stock [Line Items] | 听 | 听 | 听 |
| Common stock and sub-share certificates of proprietary interest, par value (in dollars per share) | $ 0.0333 | 听 | 听 |
| X | ||||||||||
- 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. No definition available.
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| X | ||||||||||
- Definition Aggregate dividends paid during the period for each share of common stock outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Face amount or stated value per share of common stock. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Details
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