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FAIR VALUE MEASUREMENTS - Narrative (Details) - USD ($) $ in Billions | Sep. 29, 2019 | Dec. 31, 2018
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Outstanding principal amount | $ 14.7 | $ 15.3
Unamortized discounts and issuance costs | 1.2 | 1.2
Interest rate swaps | Designated as hedges |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Aggregate notional amount of outstanding interest rate swaps | 1.5 | 1.3
Foreign currency hedges | Designated as hedges |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Aggregate notional amount of outstanding interest rate swaps | 4.1 | 3.5
Level 2 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Estimated fair value of outstanding debt | $ 17.0 | $ 15.4

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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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