Net Income Per Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Numerator for Basic and Diluted Earnings Per Share - [Abstract]
Net Income	$ 660,928	$ 494,725
Denominator for Basic Earnings Per Share - [Abstract]
Weighted Average Shares	542,278,000	538,717,000
Potential Dilutive Common Shares -[Abstract]
Stock Options/SARs	2,426,000	2,197,000
Restricted Stock/Units and Performance Units/Stock	3,367,000	3,612,000
Denominator for Diluted Earnings Per Share - [Abstract]
Adjusted Diluted Weighted Average Shares	548,071,000	544,526,000
Net Income Per Share [Abstract]
Basic	$ 1.22	$ 0.92
Diluted	$ 1.21	$ 0.91
Anti-dilutive Stock Options and SARs excluded from Diluted Earnings Per Share Calculation	200,000	200,000