Derivative Instruments and Hedging Activities (Narrative) (Details) $ in Millions	9 Months Ended	12 Months Ended
Sep. 30, 2023 USD ($) derivative	Dec. 31, 2022 derivative
Derivative [Line Items]
Interest rate swap agreements settled \| derivative	0	0
Interest Rate Swap \| Derivative instruments designated as hedging instruments:
Derivative [Line Items]
Gain on derivative expected amount to be reclassified	$ 6.4
Credit Risk Contract
Derivative [Line Items]
Derivative liability fair value gross	$ 0.0

Derivative, Agreements Settled

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- Definition

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

+ References

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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

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- Definition

The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months.

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