CONSOLIDATED BALANCE SHEETS (Parenthetical) |
Dec. 31, 2019
$ / shares
shares
|
|---|---|
| Convertible preferred stock issued | 0 |
| Class A common stock | |
| Common stock, par value (in dollars per share) | $ / shares | $ 0.01 |
| Common stock, shares authorized | 100,000,000 |
| Treasury stock, shares | 33,600,000 |
| Class B common stock | |
| Common stock, par value (in dollars per share) | $ / shares | $ 0.01 |
| Common stock, shares authorized | 30,000,000 |
| X | ||||||||||
- Definition Face amount or stated value per share of common stock. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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