Impairment and Credit Losses - Summary of Credit Loss Allowance (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jun. 30, 2020	Sep. 30, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at January 1, 2020		$ 5,635
Loss provision for receivables	$ 73,200	172,286
Write-offs		(97,092)
Balance at September 30, 2020		$ 80,829

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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- Definition

Amount of increase in allowance for credit loss on financing receivable from recovery.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of credit loss expense (reversal of expense) for financing receivable.

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