Loss Contingency, Effect of Zero Point Two Five Percentage Point Decrease on Discount Rate

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- Definition

Loss Contingency, Estimated Liability

+ References

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- Definition

Loss Contingency, Estimate of Possible Loss, Discount Rate

+ References

No definition available.

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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.

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- Definition

Amount of loss contingency liability expected to be resolved within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349

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- Definition

Amount of cash outflow reducing loss contingency liability.

+ References

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- Definition

Amount charged against operating income increasing loss contingency liability, after adjustments to reduce previously estimated charges.

+ References

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- Definition

Number of pending claims pertaining to a loss contingency.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349

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Commitments and Contingent Liabilities (Black Lung Benefit Liabilities) (Details) $ in Millions		12 Months Ended
	Feb. 21, 2020 USD ($)	Dec. 31, 2020 USD ($) claim	Dec. 31, 2019 USD ($) claim	Dec. 31, 2018 USD ($)	Dec. 31, 2013 USD ($)
Black Lung Benefit
Defined Benefit Plan Disclosure [Line Items]
Discount rate		2.00%	2.90%
Active claims \| claim		309	324
Black lung liability		$ 64.6	$ 55.1
Increase in black lung expense		1.6
Current portion of black lung liability		4.6	4.6
Payments		6.0	5.2	$ 6.3
Expense (1)		$ 15.4	$ 10.9	$ 5.4
Uninsured Risk
Defined Benefit Plan Disclosure [Line Items]
Payments	$ 40.4				$ 8.4