EXHIBIT 12 - -------------------------------------------------------------------------------- COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES (In millions, except ratios) Year ended December 31, - ---------------------------------------------------------------------------- 1996 1995 1994 1993 1992 - ---------------------------------------------------------------------------- Income (loss) from continuing operations before income tax expense (benefit) $793 $524 $559 $ (74) $510 Add: Interest Costs 133 117 120 109 100 Estimated interest in rentals (1) 27 29 31 31 29 - ---------------------------------------------------------------------------- Fixed charges as defined: 160 146 151 140 129 Interest costs capitalized (3) (3) (2) (5) (5) Losses of less than majority owned affiliates, net of dividends 8 10 18 27 34 - ---------------------------------------------------------------------------- Income as adjusted $958 $677 $726 $ 88 $668 - ---------------------------------------------------------------------------- Ratio of earnings to fixed charges 5.99 4.64 4.80 0.63 5.18 - ---------------------------------------------------------------------------- (1) Represents the estimated interest portion of rents. 18