CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
CURRENT ASSETS:
Cash and cash equivalents	$ 198,554	$ 339,154
Receivables - trade and other	497,912	545,204
Prepaid expenses and other current assets	39,963	29,253
Deferred tax assets - net	27,460	27,485
Total current assets	763,889	941,096
PROPERTY, PLANT AND EQUIPMENT:
Drilling equipment	9,253,919	7,639,171
Construction in progress	0	1,023,646
Other property and equipment	139,585	137,365
Property, plant and equipment - gross	9,393,504	8,800,182
Less accumulated depreciation and amortization	1,539,335	1,367,970
Property, plant and equipment - net	7,854,169	7,432,212
Other assets	38,709	37,884
TOTAL ASSETS	8,656,767	8,411,192
CURRENT LIABILITIES:
Short-term debt	50,000	0
Accounts payable - trade	110,216	102,773
Deferred revenues	41,102	36,189
Accrued liabilities	183,077	194,259
Total current liabilities	384,395	333,221
Long-term debt	2,806,901	2,807,324
Other liabilities	372,994	368,266
Deferred income taxes - net	$ 204,356	$ 210,982
Commitments and contingent liabilities (Note 4)
SHAREHOLDERS' EQUITY:
Class A Ordinary Shares, $0.125 par value, 125,947,424 and 124,828,807 shares issued at June 30, 2015, and December 31, 2014, respectively	$ 15,743	$ 15,604
Additional paid-in capital	1,447,212	1,436,910
Retained earnings	3,650,177	3,466,993
Cost of 1,160,928 and 264,903 treasury shares at June 30, 2015, and December 31, 2014, respectively	(11,692)	(7,990)
Accumulated other comprehensive loss	(213,319)	(220,118)
Total shareholders' equity	4,888,121	4,691,399
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 8,656,767	$ 8,411,192