Indebtedness (Tables)

12 Months Ended

Dec. 31, 2011

Indebtedness [Abstract]

Summary of debt including unamortized discount and debt issuance cost

	2011		2010
5.75% Notes due June 2011 with an effective interest rate of 5.86%		$            -		$        254
6.5% Senior Notes due November 2013 with an effective interest rate of 6.73%		-		522
6.0% Notes due June 2018 with an effective interest rate of 6.29%		265		267
7.5% Senior Notes due November 2018 with an effective interest rate of 7.61%		743		742
3.2% Senior Notes due August 2021 with an effective interest rate of 3.32%		742		-
8.55% Debentures due June 2024 with an effective interest rate of 8.76%		148		148
6.875% Notes due January 2029 with an effective interest rate of 7.08%		393		393
5.125% Notes due September 2040 with an effective interest rate of 5.22%		1,479		1,479
Other debt		299		80
Total debt		4,069		3,885
Less short-term debt and current portion of long-term debt		224		331
Long-term debt		$    3,845		$    3,554