Supplementary Financial Information (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Other Current Assets
Total Other Current Assets		$ 194	$ 236
Other Current Liabilities
Total Other Current Liabilities		850	907
Other Long-term Assets
Internal use software, net		154	209
Total Other Long-term Assets		859	682
Other Long-term Liabilities
Total Other Long-term Liabilities		269	206
Cash and cash equivalents		1,084	1,293
Litigation deposits in Brazil		61	72
Other restricted cash		3	3
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents		1,148	1,368	$ 2,402	$ 1,384
Accrued compensation liabilities		73	72
Deferred compensation liabilities(2)	[1]	23	30
Pension and other benefit liabilities		1,482	1,595
Provision for receivables		40	46	43
Provision for inventory		30	27	28
Provision for product warranty		14	15	15
Depreciation of buildings and equipment		148	136	148
Depreciation and obsolescence of equipment on operating leases		249	265	276
Amortization of internal use software		81	65	73
Amortization of product software		0	4	4
Amortization of acquired intangible assets		48	53	58
Amortization of customer contract costs	[2]	100	4	4
Cost of additions to land, buildings and equipment		55	69	93
Cost of additions to internal use software		35	36	45
Common stock dividends		255	274	307
Preferred stock dividends		14	17	24
Payments to noncontrolling interests		17	18	17
Executive Officer [Member]
Other Long-term Liabilities
Deferred compensation liabilities(2)		7	11
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Other Long-term Liabilities
Financial Liabilities Fair Value Disclosure		20	44
Pension Plan [Member]
Other Long-term Liabilities
Pension liabilities(1)	[3]	1,386	1,493
Deferred Compensation, Excluding Share-based Payments and Retirement Benefits [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Other Long-term Liabilities
Financial Liabilities Fair Value Disclosure		16	19
Interest Rate Swap [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Other Long-term Liabilities
Financial Liabilities Fair Value Disclosure		3	0
Other Current Assets
Other Current Assets
Income taxes receivable		14	43
Royalties, license fees and software maintenance		20	18
Restricted cash		1	1
Prepaid expenses		31	43
Derivative instruments		15	2
Advances and deposits		28	27
Other		85	102
Other Current Liabilities
Other Current Liabilities
Income taxes payable		33	7
Other taxes payable		77	91
Interest payable		41	43
Restructuring reserves		93	106
Derivative instruments		1	25
Product warranties		5	6
Dividends payable		69	73
Distributor and reseller rebates/commissions		158	175
Unearned income and other revenue deferrals		156	170
Other		217	211
Other Long-term Assets
Other Long-term Assets
Income taxes receivable		8	10
Prepaid pension costs		281	193
Internal use software, net		154	209
Restricted cash		63	74
Debt issuance costs, net		4	5
Customer contract costs, net		184	10
Deferred compensation plan investments		16	18
Other		149	162
Other Long-term Assets | Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]
Other Long-term Assets
Derivative instruments		0	1
Other Long-term Liabilities
Other Long-term Liabilities
Deferred taxes	[4]	51	42
Income taxes payable		18	21
Environmental reserves		9	9
Restructuring reserves		2	3
Other		189	131
Accounting Standards Update 2016-18 [Member]
Other Long-term Liabilities
Total Restricted Cash		$ 64	$ 75	$ 179

[1] As of December 31, 2018 and 2017, deferred compensation liabilities include amounts that are measured at fair value on a recurring basis of $16 and $19, respectively and amounts related to executive deferred compensation of $7 and $11, respectively. Refer to Note 16 - Fair Value of Financial Assets and Liabilities for additional information regarding deferred compensation liabilities.

[2] Amortization of customer contract costs for the year ended December 31, 2018 is reported in Decrease (increase) in other current and long-term assets. Refer to Note 2 - Revenue - Contract Costs for additional information.

[3] Refer to Note 17 - Employee Benefit Plans for additional information regarding pension liabilities.

[4] Represents the deferred tax liabilities recorded in Other long-term liabilities - refer to Note 13 - Supplementary Financial Information.