Inventories (Summary Of Inventories) (Details) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Raw materials	$ 545	$ 504
Work in process	355	339
Finished goods	1,584	1,478
Supplies and other	313	298
Gross inventories	2,797	2,619
Excess of FIFO or weighted-average cost over LIFO cost	(276)	(246)
Total	2,521	2,373
LIFO [Member]
Raw materials	176	154
Work in process	215	195
Finished goods	759	715
Supplies and other
Gross inventories	1,150	1,064
Excess of FIFO or weighted-average cost over LIFO cost	(276)	(246)
Total	874	818
Non-LIFO [Member]
Raw materials	369	350
Work in process	140	144
Finished goods	825	763
Supplies and other	313	298
Gross inventories	1,647	1,555
Excess of FIFO or weighted-average cost over LIFO cost
Total	$ 1,647	$ 1,555