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Pension and Postretirement Benefit Plans (Narrative) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($)
Pension benefits
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	$ 10.4
Estimated minimum contributions for current fiscal year	33.8
Postretirement Health Coverage
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	0.5
Estimated minimum contributions for current fiscal year	$ 1.5

X

- Definition

Amount of contribution received by defined benefit plan from employer which increases plan assets.

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