Debt Financing Arrangements (Tables)

12 Months Ended

Dec. 31, 2014

Debt Disclosure [Abstract]

Long-Term Debt

	December 31, 2014			December 31, 2013
	(In millions)
4.479% Debentures $750 million face amount, due in 2021	773			746
5.45% Notes $700 million face amount, due in 2018	701			699
5.765% Debentures $596 million face amount, due in 2041	600			600
5.375% Debentures $600 million face amount, due in 2035	589			588
5.935% Debentures $420 million face amount, due in 2032	417			416
4.016% Debentures $570 million face amount, due in 2043	378			376
4.535% Debentures $528 million face amount due in 2042	375			373
8.375% Debentures $295 million face amount, due in 2017	294			294
7.5% Debentures $187 million face amount, due in 2027	186			186
7.0% Debentures $185 million face amount, due in 2031	184			184
6.625% Debentures $182 million face amount, due in 2029	182			182
6.95% Debentures $172 million face amount, due in 2097	170			170
6.45% Debentures $154 million face amount, due in 2038	153			153
6.75% Debentures $124 million face amount, due in 2027	122			122
0.875% Convertible Senior Notes $1.15 billion face amount, due in 2014	—			1,144
Other	458			279
Total long-term debt including current maturities	5,582			6,512
Current maturities	(24		)	(1,165		)
Total long-term debt	$	5,558		$	5,347