Exhibit 12.1

Computation of Ratio of Earnings to Fixed Charges

	Year Ended December 31,
(Dollars in millions except ratios)	2016			2015			2014			2013			2012
Income (Loss) from continuing operations before income taxes (a)	$	(2,868	)	$	(2,099	)	$	(261	)	$	(207	)	$	(339	)
Fixed charges:
Interest expense (b)	506			474			507			524			492
Capitalized Interest	1			1			5			4			10
Interest factor portion of rentals (c)	86			114			132			131			111
Total fixed charges	593			589			644			659			613
Less: Capitalized Interest	(1		)	(1		)	(5		)	(4		)	(10		)
Earnings (loss) before income taxes and fixed charges	$	(2,276	)	$	(1,511	)	$	378		$	448		$	264
Ratio of earnings to fixed charges (d)	—			—			—			—			—

(a) Income from continuing operations before income taxes has been adjusted to include only distributed income of less-than-fifty-percent-owned persons.

(b) Interest expense consists of interest expense incurred from continuing operations and amortization of debt issuance costs.

(c) Interest factor portion of rentals is estimated to be one-third of rental expense.

(d) For the years ended December 31, 2016, 2015, 2014, 2013 and 2012, earnings, as defined, before fixed charges were inadequate to cover fixed charges by $2.9 billion, $2.1 billion, $266 million, $211 million and $349 million, respectively.