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Pensions And Other Postretirement Benefits (Assumed Health Care Cost Trend Rates) (Details)
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12 Months Ended | |
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Dec. 31, 2011
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Dec. 31, 2010
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| Region Reporting Information, by Region [Line Items] | ||
| Ultimate health care cost trend rate | 5.00% | 5.00% |
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United States [Member]
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| Region Reporting Information, by Region [Line Items] | ||
| Health care cost trend rate assumed for next year | 7.50% | 8.00% |
| Year that the ultimate rate is reached | 2017 | 2017 |
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Canada [Member]
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| Region Reporting Information, by Region [Line Items] | ||
| Health care cost trend rate assumed for next year | 8.00% | 8.50% |
| Year that the ultimate rate is reached | 2018 | 2018 |
| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The assumed health care cost trend rate for the next year used to measure the expected cost of benefits covered by the plan (gross eligible charges). This is based upon the annual rate of change in the cost of health care benefits currently provided by the postretirement benefit plan, due to factors other than changes in the composition of the plan population by age and dependency status. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The ultimate trend rate for health care costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The year when the ultimate health care cost trend rate is expected to be reached. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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