Annual report pursuant to Section 13 and 15(d)

Financing (Future Maturities Of Long-Term Debt) (Details)

v2.4.1.9
Financing (Future Maturities Of Long-Term Debt) (Details) (USD $)
In Millions, unless otherwise specified
Jan. 31, 2015
Debt Disclosure [Abstract]  
2016 $ 642us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
2017 306us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
2018 6us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
2019 41us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
2020 39us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
After 2020 $ 6,056us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive