Long-Term Debt - Summary of Long-Term Debt Carrying Values Including Unamortized Discounts and Premiums (Parenthetical) (Detail) (USD $)			3 Months Ended										3 Months Ended
	Apr. 30, 2012 6.875% Senior Note, due 2021 [Member]	Jul. 13, 2012 2.25% Euro Medium Term Notes, due 2022 [Member]	May 31, 2013 Successor [Member]	May 31, 2013 Successor [Member] 5.875% Senior Notes, due 2014 [Member]	May 31, 2013 Successor [Member] 3.875% Senior Note, due 2015 [Member]	May 31, 2013 Successor [Member] 5.5% Senior Notes, due 2016 [Member]	May 31, 2013 Successor [Member] 5.125% Senior Notes, due 2018 [Member]	May 31, 2013 Successor [Member] 8.5% Senior Notes, due 2019 [Member]	May 31, 2013 Successor [Member] 6.875% Senior Note, due 2021 [Member]	May 31, 2013 Successor [Member] 2.25% Euro Medium Term Notes, due 2022 [Member]	May 31, 2013 Successor [Member] 5.125% Senior Notes, due 2023 [Member]	May 31, 2013 Successor [Member] 6.45% Senior Debentures, due 2027 [Member]	May 31, 2013 Successor [Member] 3.875% Convertible Senior Debentures, due 2029 [Member]	May 31, 2013 Successor [Member] 6.25% Senior Debentures, due 2036 [Member]	May 31, 2013 Successor [Member] 6.50% Senior Notes, due 2043 [Member]
Debt Disclosure [Line Items]
Interest rates	6.875%	2.25%		5.875%	3.875%	5.50%	5.125%	8.50%	6.875%	2.25%	5.125%	6.45%	3.875%	6.25%	6.50%
Effective interest rates				1.51%	2.17%	2.52%	3.46%	4.00%	4.40%	3.82%	4.55%	5.46%	3.50%	6.03%	6.09%
Convertible Senior debentures includes fair value													$ 10,900,000
Consolidated Statement of Earnings loss amount			$ 138,506,000										$ (3,200,000)