CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Sep. 30, 2015	Dec. 31, 2014
CONDENSED CONSOLIDATED BALANCE SHEETS
Common share, par value (in dollars per share)	$ 1	$ 1
Common shares, shares authorized	1,400,000,000	1,400,000,000
Common shares, shares issued	331,900,000	345,000,000
Common shares, shares outstanding	331,900,000	345,000,000
Preferred shares, shares authorized	1,000,000	1,000,000
Preferred shares, shares issued	0	0
Preferred shares, shares outstanding	0	0