Represents information to the number of customers of the entity which have concentration risk as of balance sheet date.

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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- Definition

Amount of cash restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

+ References

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- Definition

Amount of cash and cash equivalents restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Commitments and Contingencies - Concentrations of Credit Risk (Details) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2021 USD ($) customer	Jun. 30, 2020 customer	Jun. 30, 2021 USD ($) customer	Jun. 30, 2020 customer	Dec. 31, 2020 customer
Customer Concentration
Restricted cash \| $	$ 243.5		$ 243.5
Letter of Credit
Customer Concentration
Restricted Cash \| $	$ 143.7		$ 143.7
Accounts receivable \| Customer concentration \| One customers
Customer Concentration
Number of customers	1		1
Concentration risk (as a percent)			78.50%
Accounts receivable \| Customer concentration \| Three customers
Customer Concentration
Number of customers					3
Concentration risk (as a percent)					73.90%
Revenues \| Customer concentration \| Two customers
Customer Concentration
Number of customers		2		2
Concentration risk (as a percent)		83.90%		77.90%
Revenues \| Customer concentration \| Three customers
Customer Concentration
Number of customers	3		3
Concentration risk (as a percent)	81.30%		77.70%