Stock Compensation Plans (Stock Option Activity Rollforward) (Details) (Stock options, USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Stock options
Stock Option Activity [Roll Forward]
Outstanding, beginning of year	21,641	24,004	26,193
Granted	0	441	1,128
Exercised	(2,877)	0	(902)
Forfeited	(1,616)	(2,804)	(2,415)
Outstanding, end of year	17,148	21,641	24,004
Options exercisable at year end	15,719	18,845	19,400
Weighted-average per share fair value of options granted during the year	$ 0.00	$ 4.46	$ 6.43
Outstanding, weighted-average per share exercise price, beginning of year	$ 21	$ 21	$ 21
Granted, weighted-average per share exercise price	$ 0	$ 8	$ 11
Exercised, weighted-average per share exercise price	$ 11	$ 0	$ 10
Forfeited, weighted-average per share exercise price	$ 27	$ 15	$ 21
Options outstanding, weighted-average per share exercise price, end of year	$ 22	$ 21	$ 21
Options exercisable at year end, weighted-average per share exercise price	$ 23	$ 23	$ 23

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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