Goodwill, Capitalized Software and Other Intangible Assets 2 (Details) $ in Millions	Dec. 31, 2017 USD ($)
Projected annual amortization expense
2018	$ 315
2019	234
2020	200
2021	155
2022	145
Purchased Software Products
Projected annual amortization expense
2018	236
2019	185
2020	162
2021	118
2022	109
Internally Developed Software Products
Projected annual amortization expense
2018	37
2019	9
2020	1
2021	0
2022	0
Other Intangible Assets
Projected annual amortization expense
2018	42
2019	40
2020	37
2021	37
2022	$ 36

Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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