Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2018

Carrying Amounts, Estimated Fair Values and Valuation Input Levels of the Company's Available-for-Sale Securities, Foreign Currency Contracts and Debt Instruments

The carrying amounts, estimated fair values and valuation input levels of the Company’s foreign currency contracts and debt instruments as of March 31, 2018 and December 31, 2017, are as follows:

	March 31, 2018				December 31, 2017
	Carrying Amount		Fair Value		Carrying Amount		Fair Value		Valuation Inputs
Assets:
Foreign currency contracts	$	11,008	$	11,008	$	9,050	$	9,050	Level 2
Liabilities:
5.00% senior notes due 2027		750,000		714,375		750,000		753,750	Level 2
6.00% senior notes due 2025		1,500,000		1,557,600		1,500,000		1,591,800	Level 2
5.50% senior notes due 2024		650,000		663,000		650,000		676,780	Level 2
5.00% senior notes due 2021		650,000		658,125		650,000		661,375	Level 2
Senior secured term loan due 2022, at par		886,250		890,127		886,250		892,343	Level 2
Foreign currency contracts		1,696		1,696		977		977	Level 2