Clearing Operations - Assets Pledged by Clearing Members (Details) - USD ($) $ in Millions	Mar. 31, 2019	Dec. 31, 2018
Original Margin
Original margin:
Government securities at face value	$ 57,271	$ 53,085
Letters of credit	2,486	2,556
ICE NGX cash deposits	482	605
Total	60,239	56,246
Guaranty Fund
Guaranty fund:
Government securities at face value	1,111	1,174
ICE Clear Europe | Original Margin
Original margin:
Government securities at face value	31,479	29,887
Letters of credit	0	0
ICE NGX cash deposits	0	0
Total	31,479	29,887
ICE Clear Europe | Guaranty Fund
Guaranty fund:
Government securities at face value	557	654
ICE Clear Credit | Original Margin
Original margin:
Government securities at face value	14,231	12,990
Letters of credit	0	0
ICE NGX cash deposits	0	0
Total	14,231	12,990
ICE Clear Credit | Guaranty Fund
Guaranty fund:
Government securities at face value	279	256
ICE Clear US | Original Margin
Original margin:
Government securities at face value	11,561	10,208
Letters of credit	0	0
ICE NGX cash deposits	0	0
Total	11,561	10,208
ICE Clear US | Guaranty Fund
Guaranty fund:
Government securities at face value	275	264
ICE NGX | Original Margin
Original margin:
Government securities at face value	0	0
Letters of credit	2,486	2,556
ICE NGX cash deposits	482	605
Total	2,968	3,161
ICE NGX | Guaranty Fund
Guaranty fund:
Government securities at face value	$ 0	$ 0