XML 81 R90.htm IDEA: XBRL DOCUMENT v2.4.1.9
Operating Segments (Details 3) (USD $)
In Millions, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Revenues and long lived assets attributable to geographic areas                      
Revenues $ 9,459us-gaap_Revenues $ 11,127us-gaap_Revenues $ 11,195us-gaap_Revenues $ 11,684us-gaap_Revenues $ 10,631us-gaap_Revenues $ 10,703us-gaap_Revenues $ 10,295us-gaap_Revenues $ 10,620us-gaap_Revenues $ 43,464us-gaap_Revenues $ 42,249us-gaap_Revenues $ 37,797us-gaap_Revenues
Long-Lived Assets 18,050us-gaap_NoncurrentAssets       15,366us-gaap_NoncurrentAssets       18,050us-gaap_NoncurrentAssets 15,366us-gaap_NoncurrentAssets  
United States                      
Revenues and long lived assets attributable to geographic areas                      
Revenues                 34,860us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= country_US
32,924us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= country_US
29,978us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= country_US
Long-Lived Assets 14,400us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= country_US
      11,743us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= country_US
      14,400us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= country_US
11,743us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= country_US
 
Canada                      
Revenues and long lived assets attributable to geographic areas                      
Revenues                 8,604us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= country_CA
9,325us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= country_CA
7,819us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= country_CA
Long-Lived Assets $ 3,650us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= country_CA
      $ 3,623us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= country_CA
      $ 3,650us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= country_CA
$ 3,623us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= country_CA