Fair value of the amount outstanding under the credit facility.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611

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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

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

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Indebtedness - Schedule of Credit Facilities (Details) - USD ($)	Dec. 31, 2021	Dec. 17, 2021	Dec. 31, 2020	Nov. 14, 2018
2018 Credit Facility
Line of Credit Facility [Line Items]
Maximum Borrowing Capacity				$ 1,000,000,000
Drawn	$ 0		$ 0
Undrawn	0		1,000,000,000
2021 Credit Facility
Line of Credit Facility [Line Items]
Maximum Borrowing Capacity		$ 1,250,000,000
Drawn	0		0
Undrawn	$ 1,250,000,000		$ 0