Stock And Stock-Based Incentive Plans (Stock Option Activity) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Feb. 28, 2014	Feb. 28, 2013	Feb. 29, 2012
Outstanding as of February 28, 2014, Weighted Average Exercise Price	$ 27.02
Outstanding as of February 28, 2014, Weighted Average Remaining Contractual Life (Years)	3 years 8 months 12 days
Stock Option [Member]
Outstanding as of February 28, 2013, Number of Shares	10,771,000
Options granted, Number of Shares	1,605,149	2,252,124	1,993,498
Options exercised, Number of Shares	(2,337,000)
Options forfeited or expired, Number of Shares	(21,000)
Outstanding as of February 28, 2014, Number of Shares	10,018,000	10,771,000
Exercisable as of February 28, 2014, Number of Shares	5,883,000
Outstanding as of February 28, 2013, Weighted Average Exercise Price	$ 23.00
Options granted, Weighted Average Exercise Price	$ 42.77
Options exercised, Weighted Average Exercise Price	$ 19.32
Options forfeited or expired, Weighted Average Exercise Price	$ 27.58
Outstanding as of February 28, 2014, Weighted Average Exercise Price	$ 27.02	$ 23.00
Exercisable as of February 28, 2014, Weighted Average Exercise Price	$ 21.06
Outstanding as of February 28, 2014, Weighted Average Remaining Contractual Life (Years)	3 years 8 months 12 days
Exercisable as of February 28, 2014, Weighted Average Remaining Contractual Life (Years)	2 years 7 months 6 days
Outstanding as of February 28, 2014, Aggregate Intrinsic Value	$ 214,476
Exercisable as of February 28, 2014, Aggregate Intrinsic Value	$ 161,051