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, 2012
Dec. 31, 2011
Assets pledged as collateral $ 214 $ 0
Carrying value of debt measured at fair value $ 2,623 $ 2,506
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
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 538,162,793 549,361,673
Common stock, shares outstanding 538,162,793 549,361,673
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 28,989,160 28,989,160
Common stock, shares outstanding 28,989,160 28,989,160