EXHIBIT 12 COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES
FIRST NINE MONTHS ----------- 1992 1993 1994 1995 1996 1996 1997 ---- ---- ---- ---- ---- ----- ----- $ MILLIONS Earnings before income taxes...... $ 76 $205 $294 $177 $214 $ 164 $ 199 Tax provision of 50% or more owned unconsolidated companies......... 3 3 6 5 6 2 6 Amortization of capitalized inter- est: Consolidated companies........... 3 3 3 2 3 2 3 50% or more owned unconsolidated companies....................... 1 1 1 1 1 1 -- ---- ---- ---- ---- ---- ----- ----- Adjusted earnings before income taxes........................... 83 212 304 185 224 169 208 ---- ---- ---- ---- ---- ----- ----- Interest expense: Consolidated companies........... 41 36 17 13 18 13 17 50% or more owned unconsolidated companies....................... 17 4 3 2 7 5 6 Capitalized interest costs....... 2 2 3 8 7 5 11 Amortization of debt discount and issuance costs.................. 1 1 1 1 1 1 1 Appropriate portion of rentals under operating leases.......... 15 17 17 18 18 14 15 ---- ---- ---- ---- ---- ----- ----- Total fixed charges.............. 76 60 41 42 51 38 50 ---- ---- ---- ---- ---- ----- ----- Capitalized interest costs....... (2) (2) (3) (8) (7) (5) (11) ---- ---- ---- ---- ---- ----- ----- Earnings available for fixed charges.......................... $157 $270 $342 $219 $268 $ 202 $ 247 ==== ==== ==== ==== ==== ===== ===== Ratio............................. 2.1x 4.5x 8.3x 5.2x 5.3x 5.3x 4.9x ==== ==== ==== ==== ==== ===== =====
COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES AND PREFERRED AND PREFERENCE DIVIDENDS
FIRST NINE MONTHS ------------ 1992 1993 1994 1995 1996 1996 1997 ---- ---- ---- ---- ---- ----- ----- $ MILLIONS Earnings before income taxes...... $ 76 $205 $294 $177 $214 $164 $199 Tax provision of 50% or more owned unconsolidated companies......... 3 3 6 5 6 2 6 Amortization of capitalized interests: Consolidated companies........... 3 3 3 2 3 2 3 50% or more owned unconsolidated companies....................... 1 1 1 1 1 1 -- ---- ---- ---- ---- ---- ----- ----- Adjusted earnings before income taxes........................... 83 212 304 185 224 169 208 Interest expense: Consolidated companies........... 41 36 17 13 18 13 17 50% or more owned unconsolidated companies....................... 17 4 3 2 7 5 6 Capitalized interest costs....... 2 2 3 8 7 5 11 Amortization of debt discount and issuance costs.................. 1 1 1 1 1 1 1 Appropriate portion of rentals under operating leases.......... 15 17 17 18 18 14 15 Preferred and preference dividend requirements.................... 8 8 -- -- -- -- -- Factor........................... 1.12 1.11 -- -- -- -- -- ---- ---- ---- ---- ---- ----- ----- 9 9 -- -- -- -- -- ---- ---- ---- ---- ---- ----- ----- Total fixed charges.............. 85 69 41 42 51 38 50 ---- ---- ---- ---- ---- ----- ----- Capitalized interest costs....... (2) (2) (3) (8) (7) (5) (11) ---- ---- ---- ---- ---- ----- ----- Earnings available for fixed charges.......................... $166 $279 $342 $219 $268 $202 $247 ==== ==== ==== ==== ==== ===== ===== Ratio............................. 2.0x 4.0x 8.3x 5.2x 5.3x 5.3x 4.9x ==== ==== ==== ==== ==== ===== =====