Derivative Financial Instruments and Concentrations of Credit Risk	12 Months Ended
Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments and Concentrations of Credit Risk	Derivative Financial Instruments and Concentrations of Credit Risk Interest Rate Swaps During the second quarter of 2016, we entered into interest rate swap agreements to hedge the interest rate risk on our then existing variable rate term loan. As a result of amending our Credit Agreement on December 19, 2017, these swaps (“Old Swaps”) no longer qualified for hedge accounting, resulting in a gain (recorded to “Other expense, net”) in 2017 of $2.7. On March 8, 2018, we extinguished the Old Swaps and entered into a new interest rate swap agreement (the “New Swaps”) to hedge the interest rate risk on the variable interest rate borrowings under our senior credit agreement. The New Swaps, which we have designated and are accounting for as cash flow hedges, have an initial notional amount of $260.0 and maturities through December 2021 and effectively convert a portion of the borrowings under our senior credit agreement to a fixed rate of 2.535%, plus the applicable margin. As of December 31, 2018, the aggregate notional amounts of the New Swaps was $260.0 and the unrealized gain, net of tax, recorded in AOCI was $0.2 . In addition, as of December 31, 2018 we recorded a long-term asset of $0.2 to recognize the fair value of the New Swaps. Changes in fair value for the New Swaps are reclassified into earnings as a component of interest expense, when the forecasted transaction impacts earnings. Currency Forward Contracts and Currency Forward Embedded Derivatives We manufacture and sell our products in a number of countries and, as a result, are exposed to movements in foreign currency exchange rates. Our objective is to preserve the economic value of non-functional currency-denominated cash flows and to minimize the impact of changes as a result of currency fluctuations. Our principal currency exposures relate to the South African Rand, GBP, and Euro. From time to time, we enter into forward contracts to manage the exposure on contracts with forecasted transactions denominated in non-functional currencies and to manage the risk of transaction gains and losses associated with assets/liabilities denominated in currencies other than the functional currency of certain subsidiaries (“FX forward contracts”). In addition, some of our contracts contain currency forward embedded derivatives (“FX embedded derivatives”), because the currency of exchange is not “clearly and closely” related to the functional currency of either party to the transaction. Certain of our FX forward contracts are designated as cash flow hedges. To the extent these derivatives are effective in offsetting the variability of the hedged cash flows, changes in the derivatives’ fair value are not included in current earnings, but are included in AOCI. These changes in fair value are reclassified into earnings as a component of revenues or cost of products sold, as applicable, when the forecasted transaction impacts earnings. In addition, if the forecasted transaction is no longer probable, the cumulative change in the derivatives’ fair value is recorded as a component of “Other expense, net” in the period in which the transaction is no longer considered probable of occurring. To the extent a previously designated hedging transaction is no longer an effective hedge, any ineffectiveness measured in the hedging relationship is recorded in earnings in the period in which it occurs. We had FX forward contracts with an aggregate notional amount of $14.4 and $9.0 outstanding as of December 31, 2018 and 2017, respectively, with all of the $14.4 scheduled to mature in 2019. We also had FX embedded derivatives with an aggregate notional amount of $0.4 and $1.1 at December 31, 2018 and 2017, respectively, with all of the $0.4 scheduled to mature in 2019. There were no unrealized gains or losses recorded in AOCI related to FX forward contracts as of December 31, 2018 and 2017. The net loss recorded in “Other expense, net” related to FX forward contracts and embedded derivatives totaled $0.1 in 2018, $0.4 in 2017 and $6.3 in 2016. Commodity Contracts From time to time, we enter into commodity contracts to manage the exposure on forecasted purchases of commodity raw materials. The outstanding notional amounts of commodity contracts were 3.9 and 3.6 pounds of copper at December 31, 2018 and 2017, respectively. We designate and account for these contracts as cash flow hedges and, to the extent these commodity contracts are effective in offsetting the variability of the forecasted purchases, the change in fair value is included in AOCI. We reclassify AOCI associated with our commodity contracts to cost of products sold when the forecasted transaction impacts earnings. As of December 31, 2018 and 2017, the fair values of these contracts were $1.0 (current liability) and $1.1 (current asset), respectively. The unrealized gain (loss), net of taxes, recorded in AOCI were $(0.8) and $0.8 as of December 31, 2018 and 2017, respectively. We anticipate reclassifying the unrealized loss as of December 31, 2018 to income over the next 12 months. Concentrations of Credit Risk Financial instruments that potentially subject us to significant concentrations of credit risk consist of cash and equivalents, trade accounts receivable, and interest rate swap, foreign currency forward, and commodity contracts. These financial instruments, other than trade accounts receivable, are placed with high-quality financial institutions throughout the world. We periodically evaluate the credit standing of these financial institutions. We maintain cash levels in bank accounts that, at times, may exceed federally-insured limits. We have not experienced, and believe we are not exposed to significant risk of loss in these accounts. We have credit loss exposure in the event of nonperformance by counterparties to the above financial instruments, but have no other off-balance-sheet credit risk of accounting loss. We anticipate, however, that counterparties will be able to fully satisfy their obligations under the contracts. We do not obtain collateral or other security to support financial instruments subject to credit risk, but we do monitor the credit standing of counterparties. Concentrations of credit risk arising from trade accounts receivable are due to selling to customers in a particular industry. We mitigate our credit risks by performing ongoing credit evaluations of our customers’ financial conditions and obtaining collateral, advance payments, or other security when appropriate. No one customer, or group of customers that to our knowledge are under common control, accounted for more than 10% of our revenues for any period presented.

Derivative Financial Instruments and Concentrations of Credit Risk

Interest Rate Swaps

During the second quarter of 2016, we entered into interest rate swap agreements to hedge the interest rate risk on our then existing variable rate term loan. As a result of amending our Credit Agreement on December 19, 2017, these swaps (“Old Swaps”) no longer qualified for hedge accounting, resulting in a gain (recorded to “Other expense, net”) in 2017 of $2.7. On March 8, 2018, we extinguished the Old Swaps and entered into a new interest rate swap agreement (the “New Swaps”) to hedge the interest rate risk on the variable interest rate borrowings under our senior credit agreement. The New Swaps, which we have designated and are accounting for as cash flow hedges, have an initial notional amount of $260.0 and maturities through December 2021 and effectively convert a portion of the borrowings under our senior credit agreement to a fixed rate of 2.535%, plus the applicable margin. As of December 31, 2018, the aggregate notional amounts of the New Swaps was $260.0 and the unrealized gain, net of tax, recorded in AOCI was $0.2 . In addition, as of December 31, 2018 we recorded a long-term asset of $0.2 to recognize the fair value of the New Swaps. Changes in fair value for the New Swaps are reclassified into earnings as a component of interest expense, when the forecasted transaction impacts earnings.

Currency Forward Contracts and Currency Forward Embedded Derivatives

We manufacture and sell our products in a number of countries and, as a result, are exposed to movements in foreign currency exchange rates. Our objective is to preserve the economic value of non-functional currency-denominated cash flows and to minimize the impact of changes as a result of currency fluctuations. Our principal currency exposures relate to the South African Rand, GBP, and Euro.

From time to time, we enter into forward contracts to manage the exposure on contracts with forecasted transactions denominated in non-functional currencies and to manage the risk of transaction gains and losses associated with assets/liabilities denominated in currencies other than the functional currency of certain subsidiaries (“FX forward contracts”). In addition, some of our contracts contain currency forward embedded derivatives (“FX embedded derivatives”), because the currency of exchange is not “clearly and closely” related to the functional currency of either party to the transaction. Certain of our FX forward contracts are designated as cash flow hedges. To the extent these derivatives are effective in offsetting the variability of the hedged cash flows, changes in the derivatives’ fair value are not included in current earnings, but are included in AOCI. These changes in fair value are reclassified into earnings as a component of revenues or cost of products sold, as applicable, when the forecasted transaction impacts earnings. In addition, if the forecasted transaction is no longer probable, the cumulative change in the derivatives’ fair value is recorded as a component of “Other expense, net” in the period in which the transaction is no longer considered probable of occurring. To the extent a previously designated hedging transaction is no longer an effective hedge, any ineffectiveness measured in the hedging relationship is recorded in earnings in the period in which it occurs.

We had FX forward contracts with an aggregate notional amount of $14.4 and $9.0 outstanding as of December 31, 2018 and 2017, respectively, with all of the $14.4 scheduled to mature in 2019. We also had FX embedded derivatives with an aggregate notional amount of $0.4 and $1.1 at December 31, 2018 and 2017, respectively, with all of the $0.4 scheduled to mature in 2019. There were no unrealized gains or losses recorded in AOCI related to FX forward contracts as of December 31, 2018 and 2017. The net loss recorded in “Other expense, net” related to FX forward contracts and embedded derivatives totaled $0.1 in 2018, $0.4 in 2017 and $6.3 in 2016.

Commodity Contracts

From time to time, we enter into commodity contracts to manage the exposure on forecasted purchases of commodity raw materials. The outstanding notional amounts of commodity contracts were 3.9 and 3.6 pounds of copper at December 31, 2018 and 2017, respectively. We designate and account for these contracts as cash flow hedges and, to the extent these commodity contracts are effective in offsetting the variability of the forecasted purchases, the change in fair value is included in AOCI. We reclassify AOCI associated with our commodity contracts to cost of products sold when the forecasted transaction impacts earnings. As of December 31, 2018 and 2017, the fair values of these contracts were $1.0 (current liability) and $1.1 (current asset), respectively. The unrealized gain (loss), net of taxes, recorded in AOCI were $(0.8) and $0.8 as of December 31, 2018 and 2017, respectively. We anticipate reclassifying the unrealized loss as of December 31, 2018 to income over the next 12 months.

Concentrations of Credit Risk

Financial instruments that potentially subject us to significant concentrations of credit risk consist of cash and equivalents, trade accounts receivable, and interest rate swap, foreign currency forward, and commodity contracts. These financial instruments, other than trade accounts receivable, are placed with high-quality financial institutions throughout the world. We periodically evaluate the credit standing of these financial institutions.

We maintain cash levels in bank accounts that, at times, may exceed federally-insured limits. We have not experienced, and believe we are not exposed to significant risk of loss in these accounts.

We have credit loss exposure in the event of nonperformance by counterparties to the above financial instruments, but have no other off-balance-sheet credit risk of accounting loss. We anticipate, however, that counterparties will be able to fully satisfy their obligations under the contracts. We do not obtain collateral or other security to support financial instruments subject to credit risk, but we do monitor the credit standing of counterparties.

Concentrations of credit risk arising from trade accounts receivable are due to selling to customers in a particular industry. We mitigate our credit risks by performing ongoing credit evaluations of our customers’ financial conditions and obtaining collateral, advance payments, or other security when appropriate. No one customer, or group of customers that to our knowledge are under common control, accounted for more than 10% of our revenues for any period presented.