Supplemental Data (Summary of Inventories) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Raw materials	$ 497	$ 504
Work in process	371	339
Finished goods	1,468	1,478
Supplies and other	300	298
Gross inventories	2,636	2,619
Excess of FIFO or weighted-average cost over LIFO cost	(280)	(246)
Total	2,356	2,373
LIFO
Raw materials	163	154
Work in process	245	195
Finished goods	708	715
Supplies and other	0	0
Gross inventories	1,116	1,064
Excess of FIFO or weighted-average cost over LIFO cost	(280)	(246)
Total	836	818
Non-LIFO
Raw materials	334	350
Work in process	126	144
Finished goods	760	763
Supplies and other	300	298
Gross inventories	1,520	1,555
Excess of FIFO or weighted-average cost over LIFO cost	0	0
Total	$ 1,520	$ 1,555