COMMITMENTS AND CONTINGENCIES (NARRATIVE) (DETAILS) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
INDEBTEDNESS [ABSTRACT]
Initial Borrowing Capacity	$ 900,000
Maximum borrowing capacity	$ 1,200,000
Line of Credit Facility, Interest Rate Description	Base rate loans bear interest at a rate equal to the greatest of (i) Wells Fargo's prime rate, (ii) one half of 1% in excess of the federal funds effective rate, and (iii) 1.25% in excess of the one month London Interbank Offered Rate ("LIBOR"); plus in each case a margin of 0% to 0.75 based on our net leverage ratio. Eurodollar loans bear interest at LIBOR plus a margin of 1.0% to 1.75% based on our net leverage ratio. Alternate currency loans bear interest at rates applicable to their respective currencies.
Line of Credit Facility, Commitment Fee Description	The Credit Facility commitment fees are payable to the lenders in an amount equal to the unused portion of the Credit Facility multiplied by 0.125% per annum from February 11, 2016 until a compliance certificate is provided by us in connection with the delivery to the lenders of our quarterly financial statements for the quarter ended March 31, 2016, and thereafter at a rate of 0.250% to 0.125% based on our net leverage ratio.
Description of line of credit agreement	The Credit Agreement provides for a secured revolving credit facility that matures on February 11, 2021 with an initial maximum aggregate commitment of $900.0 million, and an accordion feature of up to $1.2 billion in the aggregate, if certain conditions are satisfied. At the Company's discretion, direct borrowing options under the Credit Agreement include Eurodollar loans, overnight base rate loans, and alternate currency loans. The Credit Agreement also provides for a foreign subsidiary borrowing capacity sub-limit for loans or letters of credit of up to 50% of the total commitment amount, in both U.S. dollars and certain foreign currencies.
Line of Credit Facility, Collateral	Indebtedness under the Credit Agreement is guaranteed by certain of our domestic subsidiaries and is collateralized by (subject to permitted liens) the U.S. accounts receivable and cash of our Company and certain of its domestic subsidiaries. The indebtedness may also be collateralized by tangible assets of our Company and its domestic subsidiaries, if borrowings by foreign subsidiaries exceed $100.0 million and the total net leverage ratio is greater than 3.00 to 1.00. We also pledged 65% of the voting stock and all of the non-voting stock, if any, of certain of our material foreign subsidiaries.In addition, the Company is obligated to maintain a maximum net leverage ratio of 3.25 to 1.00, and a minimum Interest Coverage Ratio of 2.50 to 1.00.
Borrowings outstanding on credit facility	$ 133,000		$ 100,000
Average daily utilization under credit facility	313,500	$ 297,000
Letters of credit issued under credit facility	3,400
Remaining borrowing capacity under credit facility	460,000
Letters Of Credit Issued Outside Line Of Credit Facility	$ 5,000