Carrying value as of the balance sheet date of obligations incurred and payable for incentive compensation awarded to employees and directors or earned by them based on the terms of one or more relevant arrangements.

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The compensation expense recognized during the period pertaining to the deferred compensation arrangement.

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Employee Incentive Plans, Short Term Incentive Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Share-based Compensation Arrangement by Share-based Payment Award	1,543	16,645
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	15,102
Fabricated Products
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Deferred Compensation Arrangement with Individual, Compensation Expense	$ 0.2	$ 0.1	$ 0.2
All Other
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Deferred Compensation Arrangement with Individual, Compensation Expense	0.7	$ 0.3	$ 0.7
Short Term Incentive Plans
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Accrued Bonuses	$ 24.4