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Note 21: Other Postretirement Benefits (Detail) - Other Post Retirement Benefits Which Reflects Expected Future Services Expected To Be Paid (USD $)
In Millions, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Other Postretirement Benefit Plans [Member]
2013 $ 204 [1] $ 23
2014 200 14
2015 202 12
2016 195 11
2017 193 10
2018-2021 $ 977 $ 34
[1] Assumes that the prohibited payment restriction currently in effect for the U.S. qualified pension plans will be lifted upon funding certification in 2013 and excludes any payments to be determined through the Bankruptcy Proceedings for the U.S. non-qualified pension plans.