XML 51 R145.htm IDEA: XBRL DOCUMENT v2.4.0.8
Valuation and Qualifying Accounts Valuation and Qualifying Accounts (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Valuation and Qualifying Accounts [Abstract]      
Balance at Beginning of Period $ 62 $ 162 $ 196
Charged to cost and expenses 94 79 94
Charged to other accounts 23 16 18
Deductions (124) (195) (146)
Balance at End of Period $ 55 $ 62 $ 162