EARNINGS PER SHARE (NVE) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Numerator
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 187,234		$ 223,170		$ 271,942		$ 304,782
Denominator
Weighted Average Shares of Common Stock Outstanding - basic	235,578,310		235,961,402		235,421,933		235,986,874
Per Share Amounts
Net income per share - basic	$ 0.79		$ 0.95		$ 1.16		$ 1.29
Numerator
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 187,234		$ 223,170		$ 271,942		$ 304,782
Denominator
Weighted Average Number of Shares Outstanding, Basic	235,578,310		235,961,402		235,421,933		235,986,874
Stock options (in shares)	61,927		39,256		46,537		37,592
Non-Employee Director stock plan (in shares)	190,705		166,829		185,337		160,257
Employee stock purchase plan (in shares)	4,149		6,742		5,831		6,785
Restricted Shares (in shares)	412,000		584,750		487,667		533,750
Performance Shares (in shares)	1,358,423		1,362,753		1,191,734		1,125,272
Weighted Average Number of Shares Outstanding, Diluted	237,605,514	[1]	238,121,732	[1]	237,339,039	[1]	237,850,530	[1]
Per Share Amounts
Net income per share - diluted	$ 0.79		$ 0.94		$ 1.15		$ 1.28
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	327,503				329,382

[1] The denominator does not include stock equivalents for options issued under the non-qualified stock option plan due to conversion prices being higher than market prices for the periods ending September 30, 2012. If the conditions for conversion were met under this plan, 327,503 and 329,382 shares, would be included for the three and nine months ended September 30, 2012, respectively.