Exhibit 99.4

UNAUDITED PRO FORMA COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

(dollars in millions)	Pro Forma Year Ended December 31,
	2015
Earnings Available for Fixed Charges:
Income before income taxes	$	287
Equity in earnings of affiliates		(3	)
Total earnings		284
Fixed charges:
Interest expense(1)		504
Portion of rent determined to be interest(2)		85
	$	873
Fixed Charges:
Interest expensed and capitalized	$	505
Portion of rent determined to be interest(2)		85
	$	590
Pro Forma Ratio of Earnings to Fixed Charges		1.48

(1) Excludes interest capitalized during the year.

(2) A standard ratio of 33% was applied to gross rent expense to approximate the interest portion of short-term and long-term leases.