SHORT AND LONG-TERM DEBT - SUMMARY OF LONG TERM DEBT (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Total long-term debt	$ 2,347,698	$ 2,057,014
Net impact of interest rate swaps, debt issuance costs and unamortized debt discounts	(14,275)	(4,087)
Less—current portion	243	499,923
Long-term portion	2,347,455	1,557,091
Corporate Debt Securities | 5.45% Notes due 2016
Debt Instrument [Line Items]
Total long-term debt	0	250,000
Corporate Debt Securities | 1.50% Notes due 2016
Debt Instrument [Line Items]
Total long-term debt	0	250,000
Corporate Debt Securities | 1.60% Notes due 2018
Debt Instrument [Line Items]
Total long-term debt	300,000	300,000
Corporate Debt Securities | 4.125% Notes due 2020
Debt Instrument [Line Items]
Total long-term debt	350,000	350,000
Corporate Debt Securities | 8.8% Debentures due 2021
Debt Instrument [Line Items]
Total long-term debt	84,715	84,715
Corporate Debt Securities | 2.625% Notes due 2023
Debt Instrument [Line Items]
Total long-term debt	250,000	250,000
Corporate Debt Securities | 3.20% Notes due 2025
Debt Instrument [Line Items]
Total long-term debt	300,000	300,000
Corporate Debt Securities | Notes 2.30% due 2026
Debt Instrument [Line Items]
Total long-term debt	500,000	0
Corporate Debt Securities | 7.2% Debentures due 2027
Debt Instrument [Line Items]
Total long-term debt	193,639	193,639
Corporate Debt Securities | Notes 3.375% due 2046
Debt Instrument [Line Items]
Total long-term debt	300,000	0
Lease Obligations
Debt Instrument [Line Items]
Total long-term debt	$ 83,619	$ 82,747