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Basis of Presentation and Significant Accounting Policies and Practices - Effects on Consolidated Statements of Income (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
New Accounting Pronouncement Early Adoption [Line Items]
COR									$ 5,347	$ 5,113	$ 5,425
Gross profit	$ 2,440	$ 2,656	$ 2,374	$ 2,144	$ 2,137	$ 2,284	$ 2,007	$ 1,829	9,614	8,257	7,575
R&D									1,508	1,356	1,267
SG&A									1,694	1,742	1,728
Total operating profit	$ 1,563	$ 1,788	$ 1,480	$ 1,252	$ 1,332	$ 1,408	$ 1,131	$ 984	6,083	4,855	4,322
OI&E									75	155	(16)
ASU No. 2017-07
New Accounting Pronouncement Early Adoption [Line Items]
COR										5,113	5,425
Gross profit										8,257	7,575
R&D										1,356	1,267
SG&A										1,742	1,728
Total operating profit										4,855	4,322
OI&E										155	(16)
ASU No. 2017-07 \| Reported
New Accounting Pronouncement Early Adoption [Line Items]
COR										5,130	5,440
Gross profit										8,240	7,560
R&D										1,370	1,280
SG&A										1,767	1,748
Total operating profit										4,799	4,274
OI&E										211	32
Analog
New Accounting Pronouncement Early Adoption [Line Items]
Total operating profit									4,468	3,416	3,077
Analog \| ASU No. 2017-07
New Accounting Pronouncement Early Adoption [Line Items]
Total operating profit										3,416	3,077
Analog \| ASU No. 2017-07 \| Reported
New Accounting Pronouncement Early Adoption [Line Items]
Total operating profit										3,380	3,048
Embedded Processing
New Accounting Pronouncement Early Adoption [Line Items]
Total operating profit									1,143	817	611
Embedded Processing \| ASU No. 2017-07
New Accounting Pronouncement Early Adoption [Line Items]
Total operating profit										817	611
Embedded Processing \| ASU No. 2017-07 \| Reported
New Accounting Pronouncement Early Adoption [Line Items]
Total operating profit										801	596
Other
New Accounting Pronouncement Early Adoption [Line Items]
Total operating profit									$ 472	622	634
Other \| ASU No. 2017-07
New Accounting Pronouncement Early Adoption [Line Items]
Total operating profit										622	634
Other \| ASU No. 2017-07 \| Reported
New Accounting Pronouncement Early Adoption [Line Items]
Total operating profit										$ 618	$ 630