CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $) In Millions, unless otherwise specified		Capital Stock Issued [Member]	Capital Stock In Treasury [Member]	Additional Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Retained Earnings [Member]	Total
Balance at Dec. 31, 2008		$ 33	$ (11)	$ 204	$ (96)	$ 942	$ 1,072
Balance (in shares) at Dec. 31, 2008		44.6	3.6
Net income		0	0	0	0	44.0	44.0
Defined benefit plans:
Net gain/prior service (cost)	[1]	0	0	0	7	0	7
Less: Amortization of net loss/prior service cost	[1]	0	0	0	8	0	8
Total comprehensive income	[1]						59
Excess tax benefit and share withholding		0	0	(3)	0	0	(3)
Share-based compensation		0	0	9	0	0	9
Dividends		0	0	0	0	(52)	(52)
Balance at Dec. 31, 2009		33	(11)	210	(81)	934	1,085
Balance (in shares) at Dec. 31, 2009		44.6	3.6
Net income		0	0	0	0	92.0	92.0
Defined benefit plans:
Net gain/prior service (cost)	[1]	0	0	0	(13)	0	(13)
Less: Amortization of net loss/prior service cost	[1]	0	0	0	12	0	12
Total comprehensive income	[1]						91
Excess tax benefit and share withholding		0	0	(1)	0	(2)	(3)
Shares issued		1	0	6	0	0	7
Shares issued (in shares)		0.3
Share-based compensation		0	0	8	0	0	8
Dividends		0	0	0	0	(52)	(52)
Balance at Dec. 31, 2010		34	(11)	223	(82)	972	1,136
Balance (in shares) at Dec. 31, 2010		44.9	3.6
Net income		0	0	0	0	34.0	34.0
Defined benefit plans:
Net gain/prior service (cost)	[1]	0	0	0	(17)	0	(17)
Less: Amortization of net loss/prior service cost	[1]	0	0	0	7	0	7
Total comprehensive income	[1]						24
Excess tax benefit and share withholding		0	0	0	0	0	0
Shares issued		0	0	8	0	0	8
Shares issued (in shares)		0.4
Share-based compensation		0	0	8	0	0	8
Dividends		0	0	0	0	(53)	(53)
Balance at Dec. 31, 2011		$ 34	$ (11)	$ 239	$ (92)	$ 953	$ 1,123
Balance (in shares) at Dec. 31, 2011		45.3	3.6

[1] Net of ($10) million and $5 million for 2011, ($10) million and $6 million for 2010, and $5 million each in 2009 for deferred taxes related to net gain/prior service cost and amortization of net loss/prior service cost, respectively.