Clearing Operations - Assets Pledged by Clearing Members (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Original Margin
Original margin:
Government securities at face value	$ 53,085	$ 38,794
Letters of credit	2,556	1,663
NGX cash deposits	605	233
Total	56,246	40,690
Guaranty Fund
Guaranty fund:
Government securities at face value	1,174	670
ICE Clear Europe | Original Margin
Original margin:
Government securities at face value	29,887	23,496
Letters of credit	0	0
NGX cash deposits	0	0
Total	29,887	23,496
ICE Clear Europe | Guaranty Fund
Guaranty fund:
Government securities at face value	654	323
ICE Clear Credit | Original Margin
Original margin:
Government securities at face value	12,990	5,699
Letters of credit	0	0
NGX cash deposits	0	0
Total	12,990	5,699
ICE Clear Credit | Guaranty Fund
Guaranty fund:
Government securities at face value	256	176
ICE Clear U.S. | Original Margin
Original margin:
Government securities at face value	10,208	9,581
Letters of credit	0	0
NGX cash deposits	0	0
Total	10,208	9,581
ICE Clear U.S. | Guaranty Fund
Guaranty fund:
Government securities at face value	264	169
ICE NGX | Original Margin
Original margin:
Government securities at face value	0	0
Letters of credit	2,556	1,663
NGX cash deposits	605	233
Total	3,161	1,896
ICE NGX | Guaranty Fund
Guaranty fund:
Government securities at face value	0	0
Other ICE Clearing Houses | Original Margin
Original margin:
Government securities at face value	0	18
Letters of credit	0	0
NGX cash deposits	0	0
Total	0	18
Other ICE Clearing Houses | Guaranty Fund
Guaranty fund:
Government securities at face value	$ 0	$ 2