Discontinued Operations - Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
ASSETS
Cash and cash equivalents	$ 0	$ 5	$ 2	$ 4
Receivables, net	28	0
Tempo Business | Discontinued Operations
ASSETS
Cash and cash equivalents	0	5
Receivables, net	0	483
Fiduciary assets	0	526
Goodwill	0	1,337
Intangible assets, net	0	333
Fixed assets, net	0	215
Other assets	0	295
TOTAL ASSETS	0	3,194
LIABILITIES
Accounts payable and accrued liabilities	0	197
Fiduciary liabilities	0	526
Other liabilities	0	356
TOTAL LIABILITIES	$ 0	$ 1,079