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Fair Value Measurements - Financial Instruments Not Required to be Measured at Fair Value (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
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Carrying Value | Level 2 |  |
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis |  |
Marketable securities, current | $ 6,477 | $ 7,262
Carrying Value | Level 2 | 1.750% Senior Notes |  |
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis |  |
Debt | 553,050 | 557,185
Carrying Value | Level 2 | 3.375% Senior Notes |  |
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis |  |
Debt | 495,480 | 495,240
Carrying Value | Level 2 | 3.5% Senior Notes |  |
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis |  |
Debt | 594,660 | 594,502
Carrying Value | Level 2 | Other borrowings |  |
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis |  |
Debt | 55,187 | 43,539
Carrying Value | Level 3 |  |
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis |  |
Notes receivable, including noncurrent portion | 24,513 | 28,117
Fair Value | Level 2 |  |
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis |  |
Marketable securities, current | 6,477 | 7,262
Fair Value | Level 2 | 1.750% Senior Notes |  |
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis |  |
Debt | 349,659 | 562,399
Fair Value | Level 2 | 3.375% Senior Notes |  |
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis |  |
Debt | 349,145 | 510,145
Fair Value | Level 2 | 3.5% Senior Notes |  |
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis |  |
Debt | 409,692 | 609,918
Fair Value | Level 2 | Other borrowings |  |
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis |  |
Debt | 55,187 | 43,539
Fair Value | Level 3 |  |
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis |  |
Notes receivable, including noncurrent portion | 24,513 | 28,117
Cash | Carrying Value | Level 1 |  |
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis |  |
Cash and cash equivalents | 1,109,348 | 1,014,138
Cash | Fair Value | Level 1 |  |
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis |  |
Cash and cash equivalents | 1,109,348 | 1,014,138
Cash equivalents | Carrying Value | Level 2 |  |
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis |  |
Cash and cash equivalents | 761,526 | 983,061
Cash equivalents | Fair Value | Level 2 |  |
Estimated fair values of the company's financial instruments that are not measured at fair value on a recurring basis |  |
Cash and cash equivalents | $ 761,526 | $ 983,061

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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13433-108611 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Fair value of investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27232-111563 + Details
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