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Summary of Significant Accounting Policies (Tables) | 6 Months Ended
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Jun. 30, 2019
Accounting Policies [Abstract] |
Restrictions on Cash and Cash Equivalents | The following table provides a reconciliation of cash and cash equivalents and restricted cash to amounts reported within the Condensed Consolidated Balance Sheets and Condensed Consolidated Statements of Cash Flows (in millions):
|  | June 30, 2019 |  | June 30, 2018
Cash and cash equivalents, beginning of period |  | $ | 325.0 |  |  | $ | 97.9 |
Restricted cash included in other assets |  | 5.4 |  |  | 1.0 |
Total cash and cash equivalents and restricted cash |  | $ | 330.4 |  |  | $ | 98.9 |
Cash and cash equivalents, end of period |  | $ | 280.4 |  |  | $ | 112.3 |
Restricted cash included in other assets |  | 1.5 |  |  | 4.6 |
Total cash and cash equivalents and restricted cash |  | $ | 281.9 |  |  | $ | 116.9 |
Schedule of Cash and Cash Equivalents | The following table provides a reconciliation of cash and cash equivalents and restricted cash to amounts reported within the Condensed Consolidated Balance Sheets and Condensed Consolidated Statements of Cash Flows (in millions):
|  | June 30, 2019 |  | June 30, 2018
Cash and cash equivalents, beginning of period |  | $ | 325.0 |  |  | $ | 97.9 |
Restricted cash included in other assets |  | 5.4 |  |  | 1.0 |
Total cash and cash equivalents and restricted cash |  | $ | 330.4 |  |  | $ | 98.9 |
Cash and cash equivalents, end of period |  | $ | 280.4 |  |  | $ | 112.3 |
Restricted cash included in other assets |  | 1.5 |  |  | 4.6 |
Total cash and cash equivalents and restricted cash |  | $ | 281.9 |  |  | $ | 116.9 |

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