Annual report pursuant to Section 13 and 15(d)

QUARTERLY INFORMATION (unaudited) - Additional Information (Detail)

v2.4.0.8
QUARTERLY INFORMATION (unaudited) - Additional Information (Detail) (USD $)
In Millions, except Per Share data, unless otherwise specified
 3 Months Ended
Mar. 31, 2013
item
Dec. 31, 2012
Dec. 31, 2012
U.S. Domestic Package
Sep. 30, 2012
U.S. Domestic Package
Sep. 30, 2013
International Package
Dec. 31, 2012
International Package
Dec. 31, 2012
Supply Chain & Freight
Quarterly Financial Information [Line Items]              
Number of items impacting operating profit 2            
Increase (decrease) in operating profit       $ 896 $ 39    
Increase (decrease) in net income   3,023   559 36    
Increase (decrease) in basic and diluted earnings per share   $ 3.16   $ 0.58 $ 0.04    
Impact of pension mark-to-market   $ 4,831 $ 3,177     $ 941 $ 713