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Fair Value Measurements (Tables)
9 Months Ended
Oct. 28, 2018
Fair Value Disclosures [Abstract]  
Assets and Liabilities Measured at Fair Value on a Recurring Basis
Assets and liabilities that are measured at fair value on a recurring basis follow.

Fair Value at October 28, 2018 Using
 
Fair Value at January 28, 2018 Using
in millions 
Quoted Prices in Active Markets for Identical Assets
(Level 1)
 
Significant
Observable Inputs
(Level 2)
 
Significant
Unobservable Inputs
(Level 3)
 
Quoted Prices in Active Markets for Identical Assets
(Level 1)
 
Significant
Observable Inputs
(Level 2)
 
Significant
Unobservable Inputs
(Level 3)
Derivative agreements - assets
$

 
$
108

 
$

 
$

 
$
235

 
$

Derivative agreements - liabilities

 
(29
)
 

 

 
(12
)
 

Total
$

 
$
79

 
$

 
$

 
$
223

 
$

Fair Value, Liabilities Measured on Recurring and Nonrecurring Basis
The aggregate fair values and carrying values of our senior notes follow.
 
October 28,
2018
 
January 28,
2018
in millions 
Fair Value
(Level 1)
 
Carrying
Value
 
Fair Value
(Level 1)
 
Carrying
Value
Senior notes
$
23,871

 
$
23,329

 
$
26,617

 
$
24,485