Fair Value Measurements

Financial Assets and Liabilities Measured at Fair Value

We use the market and income approaches to estimate the fair value of our financial assets and liabilities, and during the three months ended March 31, 2019, there were no significant changes in valuation techniques or inputs related to the financial assets or liabilities that we have historically recorded at fair value. The tiers in the fair value hierarchy include: Level 1, defined as observable inputs such as quoted market prices in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3, defined as significant unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions.

The following tables present information about our financial assets and liabilities measured at fair value on a recurring basis and indicate the fair value hierarchy of the valuation inputs we utilized to determine such fair value as of March 31, 2019 and December 31, 2018 (in thousands):



	Balance as of March 31, 2019		Fair Value Measurements as of March 31, 2019
	Balance as of March 31, 2019		Level 1		Level 2		Level 3
Assets:
Cash surrender value of life insurance	$	53,316	$	—	$	53,316	$	—
Interest rate swaps	11,350		—		11,350		—
Cross currency swap agreements	9,911		—		9,911		—
Total Assets	$	74,577	$	—	$	74,577	$	—
Liabilities:
Contingent consideration liabilities	$	5,274	$	—	$	—	$	5,274
Deferred compensation liabilities	56,493		—		56,493		—
Cross currency swap agreements	29,586		—		29,586		—
Total Liabilities	$	91,353	$	—	$	86,079	$	5,274



	Balance as of December 31, 2018		Fair Value Measurements as of December 31, 2018
	Balance as of December 31, 2018		Level 1		Level 2		Level 3
Assets:
Cash surrender value of life insurance	$	47,649	$	—	$	47,649	$	—
Interest rate swaps	14,967		—		14,967		—
Cross currency swap agreements	7,880		—		7,880		—
Total Assets	$	70,496	$	—	$	70,496	$	—
Liabilities:
Contingent consideration liabilities	$	5,209	$	—	$	—	$	5,209
Deferred compensation liabilities	48,984		—		48,984		—
Cross currency swap agreements	40,997		—		40,997		—
Total Liabilities	$	95,190	$	—	$	89,981	$	5,209

The cash surrender value of life insurance is included in Other assets on our Unaudited Condensed Consolidated Balance Sheets. The current portion of deferred compensation is included in Accrued payroll-related liabilities and the current portion of contingent consideration liabilities is included in Other current liabilities on our Unaudited Condensed Consolidated Balance Sheets; the noncurrent portion of these amounts is included in Other noncurrent liabilities on our Unaudited Condensed Consolidated Balance Sheets based on the expected timing of the related payments. The balance sheet classification of the interest rate swaps and cross currency swap agreements is presented in Note 10, "Derivative Instruments and Hedging Activities."

Our Level 2 assets and liabilities are valued using inputs from third parties and market observable data. We obtain valuation data for the cash surrender value of life insurance and deferred compensation liabilities from third party sources, which determine the net asset values for our accounts using quoted market prices, investment allocations and reportable trades. We value our other derivative instruments using a third party valuation model that performs a discounted cash flow analysis based on the terms of the contracts and market observable inputs such as current and forward interest rates and current and forward foreign exchange rates.

Our contingent consideration liabilities are related to our business acquisitions. Under the terms of the contingent consideration agreements, payments may be made at specified future dates depending on the performance of the acquired business subsequent to the acquisition. The liabilities for these payments are classified as Level 3 liabilities because the related fair value measurement, which is determined using an income approach, includes significant inputs not observable in the market.

Financial Assets and Liabilities Not Measured at Fair Value

Our debt is reflected on the Unaudited Condensed Consolidated Balance Sheets at cost. Based on market conditions as of both March 31, 2019 and December 31, 2018, the fair value of our credit agreement borrowings reasonably approximated the carrying value of $1.7 billion. In addition, based on market conditions, the fair values of the outstanding borrowings under the receivables facility reasonably approximated the carrying values of $80 million and $110 million at March 31, 2019 and December 31, 2018, respectively. As of March 31, 2019 and December 31, 2018, the fair values of the U.S. Notes (2023) were approximately $603 million and $574 million, respectively, compared to a carrying value of $600 million at each date. As of March 31, 2019 and December 31, 2018, the fair values of the Euro Notes (2024) were approximately $599 million and $586 million compared to carrying values of $561 million and $573 million, respectively. As of March 31, 2019, the fair value of the Euro Notes (2026/28) was $1.2 billion compared to a carrying value of $1.1 billion; as of December 31, 2018, the fair value of the Euro Notes (2026/28) approximated the carrying value of $1.1 billion.

The fair value measurements of the borrowings under our credit agreement and receivables facility are classified as Level 2 within the fair value hierarchy since they are determined based upon significant inputs observable in the market, including interest rates on recent financing transactions with similar terms and maturities. We estimated the fair value by calculating the upfront cash payment a market participant would require at March 31, 2019 to assume these obligations. The fair value of our U.S. Notes (2023) is classified as Level 1 within the fair value hierarchy since it is determined based upon observable market inputs including quoted market prices in an active market. The fair values of our Euro Notes (2024) and Euro Notes (2026/28) are determined based upon observable market inputs including quoted market prices in markets that are not active, and therefore are classified as Level 2 within the fair value hierarchy.