v3.19.3

Derivative and Other Financial Instruments (Schedule of Derivative Instruments in Balance Sheet by Contract Type) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Derivatives, Fair Value [Line Items]
Prepaid expenses and other current assets	$ 58.0	$ 62.7
Total Asset Derivatives	8.5	29.4
Accrued liabilities	191.5	198.1
Other long-term liabilities	71.6	46.1
Total Liability Derivatives	9.6	7.1
Metal
Derivatives, Fair Value [Line Items]
Prepaid expenses and other current assets	8.5	29.3
Accrued liabilities	0.6	0.0
Other long-term liabilities	0.8	1.2
Energy
Derivatives, Fair Value [Line Items]
Prepaid expenses and other current assets	0.0	0.1
Accrued liabilities	0.9	1.4
Other long-term liabilities	0.1	0.0
Interest rate
Derivatives, Fair Value [Line Items]
Accrued liabilities	0.0	0.4
Currency
Derivatives, Fair Value [Line Items]
Accrued liabilities	5.3	3.0
Other long-term liabilities	$ 1.9	$ 1.1

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Fair value, after offset of derivative asset, of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, elected not to be and before offset against a right to receive collateral under a master netting arrangement. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

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