Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Millions, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Current Assets:
Cash and cash equivalents	$ 470	$ 365
Short-term marketable securities	73	164
Restricted cash	1	1
Receivables (net of reserves - $18 and $18)	396	324
Inventories	313	305
Income taxes receivable	9	8
Deferred income taxes	4	4
Other current assets	37	55
Total current assets	1,303	1,226
Long-term marketable securities	65	122
Property, plant and equipment (net of accumulated depreciation and depletion - $1,684 and $1,637)	2,107	2,117
Deferred income taxes	25	25
Other assets	233	229
Total assets	3,733	3,719
Current Liabilities:
Accounts payable	249	233
Accrued expenses	261	266
Current portion of long-term debt	7	7
Deferred income taxes	12	12
Income taxes payable	4	7
Total current liabilities	533	525
Long-term debt	2,296	2,297
Deferred income taxes	6	6
Other liabilities	744	735
Commitments and contingencies
Stockholders' Equity:
Preferred stock
Common stock	10	10
Treasury stock
Capital received in excess of par value	2,568	2,561
Accumulated other comprehensive loss	(156)	(174)
Retained earnings (deficit)	2,268	2,241
Total stockholders' equity	154	156
Total liabilities and stockholders' equity	$ 3,733	$ 3,719