v3.8.0.1
CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Millions
Sep. 30, 2017
Dec. 31, 2016
Statement of Financial Position [Abstract]    
Trade accounts receivable, allowances (in dollars) $ 104 $ 122
Trade accounts payable at fair value $ 925 $ 522
Convertible perpetual preference shares, par value (in dollars per share) $ 0.01 $ 0.01
Convertible perpetual preference shares, authorized (in shares) 6,899,700 6,900,000
Convertible perpetual preference shares, issued (in shares) 6,899,700 6,900,000
Convertible perpetual preference shares, outstanding (in shares) 6,899,700 6,900,000
Convertible perpetual preference shares, liquid preference (in dollars per share) $ 100 $ 100
Common shares, par value (in dollars per share) $ 0.01 $ 0.01
Common shares, authorized (in shares) 400,000,000 400,000,000
Common shares, issued (in shares) 140,608,657 139,500,862
Common shares, outstanding (in shares) 140,608,657 139,500,862
Common shares, at cost (in shares) 12,882,313 12,882,313