Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Parenthetical)

v2.4.0.6
Condensed Consolidated Balance Sheets (Parenthetical) (USD $)
In Millions, except Share data, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Allowance for Doubtful Accounts Receivable, Current $ 80 $ 79
Carrying value of debt measured at fair value $ 2,813 $ 2,443
Preferred stock, par or stated value per share $ 0.01 $ 0.01
Preferred stock, shares authorized 50,000,000 50,000,000
Preferred stock, shares issued 0 0
Preferred Stock, Shares Outstanding 0 0
Interactive Group [Member] | Common Class A [Member]
    
Common stock, par or stated value per share $ 0.01 $ 0.01
Common stock, shares authorized 4,000,000,000 4,000,000,000
Common stock, shares issued 504,514,950 516,009,627
Common stock, shares outstanding 504,514,950 516,009,627
Interactive Group [Member] | Common Class B [Member]
    
Common stock, par or stated value per share $ 0.01 $ 0.01
Common stock, shares authorized 150,000,000 150,000,000
Common stock, shares issued 28,917,353 28,942,403
Common stock, shares outstanding 28,917,353 28,942,403
Ventures Group [Member] | Common Class A [Member]
    
Common stock, par or stated value per share $ 0.01 $ 0.01
Common stock, shares authorized 200,000,000 200,000,000
Common stock, shares issued 35,343,798 35,355,434
Common stock, shares outstanding 35,343,798 35,355,434
Ventures Group [Member] | Common Class B [Member]
    
Common stock, par or stated value per share $ 0.01 $ 0.01
Common stock, shares authorized 7,500,000 200,000,000
Common stock, shares issued 1,442,689 1,446,916
Common stock, shares outstanding 1,442,689 1,446,916