DERIVATIVE FINANCIAL INSTRUMENTS In the normal course of business, we are exposed to market risk associated with changes in foreign currency exchange rates and interest rates. To manage a portion of these inherent risks, we may purchase certain types of derivative financial instruments based on management's judgment of the trade-off between risk, opportunity and cost. We do not hold or issue derivative financial instruments for trading or speculative purposes. The impact of hedge ineffectiveness was not significant in any of the periods presented.

CURRENCY DERIVATIVE CONTRACTS From time to time, we use foreign currency forward and option contracts to reduce the effects of fluctuations in exchange rates relating to certain foreign currencies. We had currency forward contracts outstanding with a notional amount of $180.1 million and $185.8 million at December 31, 2019 and 2018, respectively, that hedge our exposure to changes in foreign currency exchange rates for certain payroll expenses into the third quarter of 2022 and the purchase of certain direct and indirect inventory and other working capital items into the third quarter of 2020.

FIXED-TO-FIXED CROSS-CURRENCY SWAP In 2019, we entered into a fixed-to-fixed cross-currency swap to reduce the variability of functional currency equivalent cash flows associated with changes in exchange rates on certain Euro-based intercompany loans. As of December 31, 2019, the notional amount of the fixed-to-fixed cross-currency swap was $224.2 million, and hedges our exposure to changes in exchange rates on the intercompany loans into the second quarter of 2024.

VARIABLE-TO-FIXED INTEREST RATE SWAP In 2017, we entered into a variable-to-fixed interest rate swap to reduce the variability of cash flows associated with interest payments on our variable rate debt. In the second quarter of 2018, we discontinued this variable-to-fixed interest rate swap, which was in an asset position of $5.6 million on the date that it was discontinued.

Also in the second quarter of 2018, we entered into a new variable-to-fixed interest rate swap to reduce the variability of cash flows associated with interest payments on our variable rate debt. In the second quarter of 2019, we discontinued this variable-to-fixed interest rate swap, which was a liability of $9.7 million on the date that it was discontinued.

Also in the second quarter of 2019, we entered into a new variable-to-fixed interest rate swap to reduce the variability of cash flows associated with interest payments on our variable rate debt. As of December 31, 2019, we have the following notional amounts hedged in relation to our variable-to-fixed interest rate swap: $1.0 billion through May 2020, $900.0 million through May 2021, $750.0 million through May 2022, $600.0 million through May 2023 and $500.0 million through May 2024.

The following table summarizes the reclassification of pre-tax derivative gains (losses) into net income (loss) from accumulated other comprehensive income (loss) for those derivative instruments designated as cash flow hedges under Accounting Standards Codification 815 - Derivatives and Hedging (ASC 815):



	Location of Gain (Loss) Reclassified into Net Income (Loss)	Gain (Loss) Reclassified During the Twelve Months Ended December 31,									Total of Financial Statement Line Item			Gain (Loss) Expected to be Reclassified During the Next 12 Months
	Location of Gain (Loss) Reclassified into Net Income (Loss)	2019			2018			2017			2019
		(in millions)
Currency forward contracts	Cost of Goods Sold	$	2.4		$	(2.8	)	$	(5.3	)	$	5,628.3		$	5.0
Fixed-to-fixed cross-currency swap	Other Income (Expense), net	1.3			—			—			(12.5		)	—
Variable-to-fixed interest rate swap	Interest Expense	(2.0		)	3.2			—			(217.3		)	(8.2		)

See Note 14 - Reclassifications Out of Accumulated Other Comprehensive Income (Loss) for amounts recognized in Accumulated other comprehensive income (loss) during the years ended December 31, 2019, December 31, 2018 and December 31, 2017.

The following table summarizes the amount and location of gains (losses) recognized in the Consolidated Statements of Operations for those derivative instruments not designated as hedging instruments under ASC 815:



	Location of Gain/(Loss) Recognized in Net Income (Loss)	Gain (Loss) Recognized During the Twelve Months Ended December 31,							Total of Financial Statement Line Item
	Location of Gain/(Loss) Recognized in Net Income (Loss)	2019		2018		2017			2019
		(in millions)
Currency forward contracts	Cost of Goods Sold	$	3.9	$	1.6	$	2.7		$	5,628.3
Currency forward contracts	Other Income (Expense), Net	—		1.4		(0.1		)	(12.5		)
Currency option contracts	Cost of Goods Sold	—		—		0.8			5,628.3

CONCENTRATIONS OF CREDIT RISK In the normal course of business, we provide credit to customers. We periodically evaluate the creditworthiness of our customers and we maintain reserves for potential credit losses.

Sales to GM were approximately 37% of our consolidated net sales in 2019, 41% in 2018, and 47% in 2017. Accounts and other receivables due from GM were $328.5 million at year-end 2019 and $353.7 million at year-end 2018. Sales to FCA US LLC (FCA), were approximately 17% of our consolidated net sales in 2019, 13% in 2018 and 14% in 2017. Accounts and other receivables due from FCA were $154.8 million at year-end 2019 and $176.0 million at year-end 2018. No other single customer accounted for more than 10% of our consolidated net sales in any year presented.

In addition, our total GM postretirement cost sharing asset was $236.0 million as of December 31, 2019 and $232.9 million as of December 31, 2018. See Note 9 - Employee Benefit Plans for more detail on this cost sharing asset.

We diversify the concentration of invested cash and cash equivalents among different financial institutions and we monitor the selection of counterparties to other financial instruments to avoid unnecessary concentrations of credit risk.