CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Millions, except Share data	Jun. 30, 2011	Dec. 31, 2010
CONSOLIDATED BALANCE SHEETS
Cash restricted (in dollars)	$ 345.9	$ 286.7
Common shares, par value per share (in dollars per share)	$ 1	$ 1
Common shares, authorized shares	50,000,000	50,000,000
Common shares, issued shares	7,958,589	8,194,925
Common shares, outstanding shares	7,958,589	8,194,925