Exhibit 12.2 Computation of Ratio of Earnings to Fixed Charges TOTAL ENTERPRISE BASIS--Unaudited(a) Continuing Operations (Dollars in Millions) Year Ended December 31 --------------------------------------------- 1997 1996 1995 1994 1993 ------ ------ ----- ------ ------ Portion of rentals representing interest.. $ 82 $ 78 $ 76 $ 83 $ 81 Capitalized interest...................... 31 11 13 58 105 Other interest and fixed charges.......... 312 382 452 456 365 ------ ------ ----- ------ ----- Total fixed charges (A)................... $ 425 $ 471 $ 541 $ 597 $ 551 ====== ====== ===== ====== ===== Earnings--pretax income (loss) with applicable adjustments (B)............... $1,745 $1,837 $ 877 $1,300 $ 239 ====== ====== ===== ====== ===== Ratio of (B) to (A)....................... 4.11 3.90 1.62 2.18 (b) ====== ====== ===== ====== ===== - -------- (a) Amounts in prior years have been reclassified to conform to 1997 classifications. (b) Earnings did not cover fixed charges by $312 million for 1993.