General General (Tables)

6 Months Ended

Jun. 30, 2018

Cash and Cash Equivalents [Abstract]

Schedule of Cash and Cash Equivalents [Table Text Block]

The following table provides a reconciliation of cash and restricted cash reported within the consolidated balance sheets that total to the amounts shown in the consolidated statements of cash flows:

	June 30		December 31
(in millions of U.S. dollars)	2018		2017
Cash	$	1,000	$	728
Restricted cash	101		123
Total cash and restricted cash shown in the consolidated statements of cash flows	$	1,101	$	851