Following information was taken from Lowes 10k:

12 Months Ended February 03, 2017

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Debt Category Weighted-Average

(In millions) Interest Rate at February 3, 2017 February3, 2017 January29, 2016

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Secured debt:

*Mortgage notes due through fiscal 2027

1 5.44% $ 7 $ 7

Unsecured debt:

Notes due through fiscal 2021 2.87% 3567 3990

Notes due fiscal 2022-2026 3.07% 3783 2443

Notes due fiscal 2027-2031 6.76% 814 813

Notes due fiscal 2032-2036 5.64% 941 941

Notes due fiscal 2037-2041 ² 5.94% 1585 1585

Notes due fiscal 2042-2046 4.26% 3631 2301

Capitalized lease obligations due

through fiscal 2037 861 526

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Total long-term debt 15,189 12,606

Less current maturities (795) (1061)

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Long-term debt, excluding current maturities $14,394 $11,545

Foot notes

*1Real properties with an aggregate book value of $28 million were pledged as collateral at February3, 2017, for secured debt.

2Amount includes $100 million of notes issued in 1997 that may be put at the option of the holder on the 20th anniversary of the issue at par value. None of these notes are currently puttable.

Required: Detailed calculation & explanation for the following :

a. What is the amount of long-term debt on Lowe's balance sheet as of February 3, 2017?

b. What proportion of Lowe's long-term debt is due before February 2, 2018?

c. How much of Lowe's assets were pledged as collateral as of February 3, 2017?