Investment in Affiliates, at Equity - Condensed Financial Data for Fuji Xerox Unconsolidated Affiliate (Details) - Fuji Xerox [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Summary of Operations
Revenues	$ 9,638	$ 10,149	$ 9,832
Costs and expenses	9,072	9,460	9,225
Income before income taxes	566	689	607
Income tax expense	144	206	218
Net Income	422	483	389
Less: Net income - noncontrolling interests	5	8	7
Net Income - Fuji Xerox	417	475	382
Assets:
Current assets	4,315	4,313	4,350
Long-term assets	4,488	4,516	4,777
Total Assets	8,803	8,829	9,127
Liabilities and Equity:
Short-term debt	428	681	780
Other current liabilities	2,079	2,001	2,011
Long-term debt	76	283	584
Other long-term liabilities	369	587	521
Noncontrolling interests	33	31	31
Fuji Xerox shareholders' equity	5,818	5,246	5,200
Total Liabilities and Equity	$ 8,803	$ 8,829	$ 9,127