Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

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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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No definition available.

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Amount of loss contingency liability.

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- Definition

Amount of damages awarded to the plaintiff in the legal matter.

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The value (monetary amount) of the award the plaintiff seeks in the legal matter.

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The amount of cash paid for the settlement of litigation or for other legal issues during the period.

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Commitments, Contingencies and Litigation Settlement (Details) - USD ($) $ in Millions	1 Months Ended				3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Sep. 30, 2013	May 31, 2013	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Loss Contingencies [Line Items]
Litigation settlement gain					$ 3.3	$ 0.0
TMK IPSCO
Loss Contingencies [Line Items]
Direct damages sought				$ 10.0
Damages awarded		$ 2.2	$ 5.2
Loss contingency accrual							$ 7.3
Settled Litigation \| TMK IPSCO
Loss Contingencies [Line Items]
Payments for legal settlements	$ 4.0