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Debt (Schedule of Principal Repayments of Term Loan) (Details) - Credit Facility - Term Loan $ in Millions | 9 Months Ended
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Sep. 30, 2021 USD ($)
Debt Instrument [Line Items] |
2021 | $ 15
2022 | 60
2023 | 100
2024 | 125
Due at the end of each calendar quarter starting December 31, 2021 until December 31, 2022 |
Debt Instrument [Line Items] |
Quarterly installment payments | 15
Due at the end of each calendar quarter until December 31, 2023, with the remaining balance due at maturity date on March 31, 2024 |
Debt Instrument [Line Items] |
Quarterly installment payments | $ 25

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