Suppose the following items were take from the December $31,2017$ assets section of the Boeing company balance sheet. $($ all dollars are in millions

Inventory $$16,933$

Notes Receivable$-$ due after December $31,2018$ $$5,466$

Notes receivable$-$ due before December $31,2018$ $$368$

Accumulated depreciation$-$building $$12,795$

Patents $$12,528$

Buildings $21,579$

Accounts receivable $ $5,785$

Debt investments $($short$-$term$)$ $$2,008$