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Goodwill And Other Intangible Assets (Tables) | 9 Months Ended
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Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Indefinite and Finite Lived Assets | Other intangible assets are comprised of the following:
| September 30, 2021 |  | December 31, 2020
(in millions) | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Definite-lived intangible assets | $ | 31.2 |  |  | $ | (17.9) |  |  | $ | 13.3 |  |  | $ | 31.2 |  |  | $ | (16.6) |  |  | $ | 14.6 |
Indefinite-lived intangible assets |  |  |  |  | 336.0 |  |  |  |  |  |  | 336.0 |
Total |  |  |  |  | $ | 349.3 |  |  |  |  |  |  | $ | 350.6 |

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