Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements Nonrecurring Fair Value Measurements (Details)

v2.4.0.6
Fair Value Measurements Nonrecurring Fair Value Measurements (Details) (QMT [Member], USD $)
In Millions, unless otherwise specified
12 Months Ended
Sep. 30, 2012
Impaired Long-Lived Assets Held and Used [Line Items]  
Equipment, carrying value $ 927
Equipment impairment 54
Impaired Long-Lived Assets Held and Used, QMT Group 1 [Member]
 
Impaired Long-Lived Assets Held and Used [Line Items]  
Equipment, carrying value $ 26