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Contingencies (Narrative) (Details) $ in Millions	Mar. 31, 2021 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Maximum Contingent Contributions To Joint Venture	$ 1,250.0
Letters of credit outstanding, amount	116.6
Deposit Liabilities, Collateral Issued, Financial Instruments	$ 12.7

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- References

No definition available.

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- Definition

Amount of securities, mortgage loans, or other financial instruments pledged as collateral for deposits.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 405
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=116652737&loc=d3e64164-112818

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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- Definition

Maximum Contingent Contributions To Joint Venture

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