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Quarterly report pursuant to Section 13 or 15(d)

Capital Stock (Details)

v2.3.0.15
Capital Stock (Details) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Sep. 30, 2011
Aug. 15, 2011
Jun. 13, 2011
May 17, 2011
Dec. 31, 2010
Jun. 30, 2010
Jun. 13, 2011
Common Stock [Member]
Jun. 13, 2011
Over-allotment Option [Member]
May 25, 2011
Preferred Class A [Member]
May 25, 2011
Preferred Class B [Member]
May 17, 2011
Maximum [Member]
Shares authorized to be repurchased Ìý Ìý Ìý Ìý 4,000,000 Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Stock repurchased during period, shares 3,000,000 Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Stock repurchased during period, value $ 222 Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Treasury stock acquired, cost per share $ 74 Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Remaining number of shares authorized to be repurchased 1,000,000 Ìý Ìý 1,000,000 Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Common shares, issued 149,195,469 Ìý Ìý 149,195,469 Ìý 10,350,000 Ìý 138,845,469 Ìý 9,000,000 1,350,000 Ìý Ìý Ìý
Price per share $ 85.63 Ìý Ìý $ 85.63 Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Proceeds from issuance of common stock $ 853.7 Ìý Ìý $ 853.7 Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Percentage increase in dividends payable Ìý Ìý Ìý 100.00% Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý
Dividend payable, per share $ 0.28 Ìý Ìý $ 0.28 Ìý Ìý Ìý $ 0.0875 $ 0.14 Ìý Ìý Ìý Ìý Ìý
Common share dividends date paid Jun. 01, 2011 Mar. 01, 2011
Common share dividends date of record Apr. 29, 2011 Feb. 15, 2011
Common shares, authorized 400,000,000 Ìý Ìý 400,000,000 Ìý Ìý 224,000,000 224,000,000 Ìý Ìý Ìý Ìý Ìý 400,000,000
Total shares, authorized Ìý Ìý Ìý Ìý Ìý Ìý 231,000,000 Ìý Ìý Ìý Ìý Ìý Ìý 407,000,000
Preferred stock, shares included in amendment Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý Ìý 3,000,000 4,000,000 Ìý