XML 46 R40.htm IDEA: XBRL DOCUMENT v2.4.0.6
Financial Instruments (Carrying Value And Fair Value Of Convertible Senior Notes) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended
Jun. 30, 2012
Mar. 31, 2012
Financial Instruments    
Convertible Senior Notes, Carrying Value $ 544 $ 539 [1]
Interest rate percentage on convertible senior notes, due 2016 0.75% 0.75%
0.75% Convertible Senior Notes Due 2016
   
Financial Instruments    
Convertible Senior Notes, Carrying Value 544 539
Convertible Senior Notes, Fair Value $ 556 $ 584
Interest rate percentage on convertible senior notes, due 2016 0.75% 0.75%
Convertible Senior Notes, Maturity Date (Year) 2016 2016
[1] Derived from audited consolidated financial statements.