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Employee Benefit Plans (Narrative) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($)
Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	$ 9.4
Estimated minimum contributions	30.4
Postretirement Health Coverage [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	0.5
Estimated minimum contributions	$ 1.5

X

- Definition

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

+ References

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- Definition

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+ References

No definition available.

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- Definition

Amount of contributions received and expected to be received by defined benefit plan from employer in current fiscal year.

+ References

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