XML 48 R61.htm IDEA: XBRL DOCUMENT v2.4.0.6
Debt (Details 2) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
Annual maturities of long-term debt through 2015  
2012 $ 76
2013 129
2014 206
2015 1,134
2016 $ 929