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Stock-Based Compensation Plans - Nonqualified Stock Options, Assumptions and Other Disclosures (Details) - Nonqualified Stock Options shares in Millions, $ in Millions	6 Months Ended
	Jun. 30, 2023 USD ($) shares
Stock-Based Compensation Plans - Disclosures
Options granted (in shares) | shares	0.0
Other nonqualified stock option disclosures
Unrecognized compensation costs | $	$ 0.4
Weighted-average service period over which unrecognized compensation costs will be recognized	7 months 6 days

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