Debt (Tables)

12 Months Ended

Dec. 31, 2012

Debt [Table] [Abstract]

Short-term and Long-term Debt

(In millions)	2012		2011
Short-term:
Commercial paper	$	200	$	100
Current maturities of long-term debt		1		4
Total short-term debt	$	201	$	104
Long-term:
Uncollateralized debt:
2.75% Notes due 2016	$	600	$	600
5.375% Notes due 2017		250		250
6.35% Notes due 2018		131		131
8.5% Notes due 2019		251		251
4.375% Notes due 2020		249		249
5.125% Notes due 2020		299		299
6.37% Notes due 2021		78		78
4.5% Notes due 2021		299		298
4% Notes due 2022		743		743
7.65% Notes due 2023		100		100
8.3% Notes due 2023		17		17
7.875% Debentures due 2027		300		300
8.3% Step Down Notes due 2033		83		83
6.15% Notes due 2036		500		500
5.875% Notes due 2041		298		298
5.375% Notes due 2042		750		750
Other		38		43
Total long-term debt	$	4,986	$	4,990