Segments of Business and Geographic Areas - Sales by Segment of Business (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 03, 2021	Dec. 29, 2019	Dec. 30, 2018	Oct. 31, 2020	Oct. 31, 2019
Segment Reporting Information [Line Items]
Sales to Customers	$ 82,584	$ 82,059	$ 81,581
Percentage Change In Sales By Segment Of Business	0.60%	0.60%
Consumer
Segment Reporting Information [Line Items]
Sales to Customers	$ 14,053	$ 13,898	13,853
Percentage Change In Sales By Segment Of Business	1.10%	0.30%
Pharmaceutical
Segment Reporting Information [Line Items]
Sales to Customers	$ 45,572	$ 42,198	40,734
Percentage Change In Sales By Segment Of Business	8.00%	3.60%
Pharmaceutical | Immunology
Segment Reporting Information [Line Items]
Sales to Customers	$ 15,055	$ 13,950	13,120
Percentage Change In Sales By Segment Of Business	7.90%	6.30%
Pharmaceutical | Infectious Diseases
Segment Reporting Information [Line Items]
Sales to Customers	$ 3,574	$ 3,413	3,304
Percentage Change In Sales By Segment Of Business	4.70%	3.30%
Pharmaceutical | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers	$ 6,548	$ 6,328	6,077
Percentage Change In Sales By Segment Of Business	3.50%	4.10%
Pharmaceutical | Oncology
Segment Reporting Information [Line Items]
Sales to Customers	$ 12,367	$ 10,692	9,844
Percentage Change In Sales By Segment Of Business	15.70%	8.60%
Pharmaceutical | Pulmonary Hypertension
Segment Reporting Information [Line Items]
Sales to Customers	$ 3,148	$ 2,623	2,573
Percentage Change In Sales By Segment Of Business	20.00%	1.90%
Pharmaceutical | Cardiovascular/Metabolism/Other
Segment Reporting Information [Line Items]
Sales to Customers	$ 4,878	$ 5,192	5,816
Percentage Change In Sales By Segment Of Business	(6.00%)	(10.70%)
Medical Devices
Segment Reporting Information [Line Items]
Sales to Customers	$ 22,959	$ 25,963	26,994
Percentage Change In Sales By Segment Of Business	(11.60%)	(3.80%)
Medical Devices | Diabetes Care
Segment Reporting Information [Line Items]
Sales to Customers			1,009
Medical Devices | Interventional Solutions
Segment Reporting Information [Line Items]
Sales to Customers	$ 3,046	$ 2,997	2,646
Percentage Change In Sales By Segment Of Business	1.60%	13.30%
Medical Devices | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers	$ 7,763	$ 8,839	8,885
Percentage Change In Sales By Segment Of Business	(12.20%)	(0.50%)
Medical Devices | Surgery
Segment Reporting Information [Line Items]
Sales to Customers	$ 8,232	$ 9,501	9,901
Percentage Change In Sales By Segment Of Business	(13.40%)	(4.00%)
Medical Devices | Vision
Segment Reporting Information [Line Items]
Sales to Customers	$ 3,919	$ 4,624	4,553
Percentage Change In Sales By Segment Of Business	(15.20%)	1.60%
Baby Care | Consumer
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,517	$ 1,675	1,858
Percentage Change In Sales By Segment Of Business	(9.40%)	(9.90%)
Oral Care | Consumer
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,641	$ 1,528	1,555
Percentage Change In Sales By Segment Of Business	7.40%	(1.70%)
OTC | Consumer
Segment Reporting Information [Line Items]
Sales to Customers	$ 4,824	$ 4,444	4,334
Percentage Change In Sales By Segment Of Business	8.50%	2.50%
Women's Health | Consumer
Segment Reporting Information [Line Items]
Sales to Customers	$ 901	$ 986	1,049
Percentage Change In Sales By Segment Of Business	(8.60%)	(6.00%)
Wound Care and Other | Consumer
Segment Reporting Information [Line Items]
Sales to Customers	$ 720	$ 671	675
Percentage Change In Sales By Segment Of Business	7.20%	(0.60%)
Remicade | Pharmaceutical | Immunology
Segment Reporting Information [Line Items]
Sales to Customers	$ 3,747	$ 4,380	5,326
Percentage Change In Sales By Segment Of Business	(14.40%)	(17.80%)
Simponi/Simponi Aria | Pharmaceutical | Immunology
Segment Reporting Information [Line Items]
Sales to Customers	$ 2,243	$ 2,188	2,084
Percentage Change In Sales By Segment Of Business	2.60%	5.00%
Stelara | Pharmaceutical | Immunology
Segment Reporting Information [Line Items]
Sales to Customers	$ 7,707	$ 6,361	5,156
Percentage Change In Sales By Segment Of Business	21.10%	23.40%
Tremfya | Pharmaceutical | Immunology
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,347	$ 1,012	544
Percentage Change In Sales By Segment Of Business	33.20%	85.90%
Other Immunology | Pharmaceutical | Immunology
Segment Reporting Information [Line Items]
Sales to Customers	$ 11	$ 10	10
Percentage Change In Sales By Segment Of Business	6.40%	4.50%
EDURANT/rilpivirine | Pharmaceutical | Infectious Diseases
Segment Reporting Information [Line Items]
Sales to Customers	$ 964	$ 861	816
Percentage Change In Sales By Segment Of Business	11.90%	5.60%
PREZISTA/PREZCOBIX/REZOLSTA/SYMTUZA | Pharmaceutical | Infectious Diseases
Segment Reporting Information [Line Items]
Sales to Customers	$ 2,184	$ 2,110	1,955
Percentage Change In Sales By Segment Of Business	3.50%	8.00%
Other Infectious Diseases | Pharmaceutical | Infectious Diseases
Segment Reporting Information [Line Items]
Sales to Customers	$ 427	$ 441	533
Percentage Change In Sales By Segment Of Business	(3.20%)	(17.30%)
CONCERTA/Methylphenidate | Pharmaceutical | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers	$ 622	$ 696	663
Percentage Change In Sales By Segment Of Business	(10.60%)	4.90%
INVEGA SUSTENNA/XEPLION/TRINZA/TREVICTA | Pharmaceutical | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers	$ 3,653	$ 3,330	2,928
Percentage Change In Sales By Segment Of Business	9.70%	13.70%
RISPERDAL CONSTA | Pharmaceutical | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers	$ 642	$ 688	737
Percentage Change In Sales By Segment Of Business	(6.80%)	(6.70%)
OTHER NEUROSCIENCE | Pharmaceutical | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,632	$ 1,614	1,749
Percentage Change In Sales By Segment Of Business	1.10%	(7.70%)
DARZALEX | Pharmaceutical | Oncology
Segment Reporting Information [Line Items]
Sales to Customers	$ 4,190	$ 2,998	2,025
Percentage Change In Sales By Segment Of Business	39.80%	48.00%
Erleada | Pharmaceutical | Oncology
Segment Reporting Information [Line Items]
Sales to Customers	$ 760	$ 332	124
IMBRUVICA | Pharmaceutical | Oncology
Segment Reporting Information [Line Items]
Sales to Customers	$ 4,128	$ 3,411	2,615
Percentage Change In Sales By Segment Of Business	21.00%	30.40%
VELCADE | Pharmaceutical | Oncology
Segment Reporting Information [Line Items]
Sales to Customers	$ 408	$ 751	1,116
Percentage Change In Sales By Segment Of Business	(45.70%)	(32.70%)
ZYTIGA | Pharmaceutical | Oncology
Segment Reporting Information [Line Items]
Sales to Customers	$ 2,470	$ 2,795	3,498
Percentage Change In Sales By Segment Of Business	(11.60%)	(20.10%)
Other Oncology | Pharmaceutical | Oncology
Segment Reporting Information [Line Items]
Sales to Customers	$ 413	$ 407	466
Percentage Change In Sales By Segment Of Business	1.70%	(12.70%)
OPSUMIT | Pharmaceutical | Pulmonary Hypertension
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,639	$ 1,327	1,215
Percentage Change In Sales By Segment Of Business	23.50%	9.20%
UPTRAVI | Pharmaceutical | Pulmonary Hypertension
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,093	$ 819	663
Percentage Change In Sales By Segment Of Business	33.50%	23.50%
Other | Pharmaceutical | Pulmonary Hypertension
Segment Reporting Information [Line Items]
Sales to Customers	$ 416	$ 476	695
Percentage Change In Sales By Segment Of Business	(12.80%)	(31.50%)
Other | Pharmaceutical | Cardiovascular/Metabolism/Other
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,186	$ 1,353	1,470
Percentage Change In Sales By Segment Of Business	(12.40%)	(8.00%)
Xarelto | Pharmaceutical | Cardiovascular/Metabolism/Other
Segment Reporting Information [Line Items]
Sales to Customers	$ 2,345	$ 2,313	2,477
Percentage Change In Sales By Segment Of Business	1.40%	(6.60%)
INVOKANA/INVOKAMET | Pharmaceutical | Cardiovascular/Metabolism/Other
Segment Reporting Information [Line Items]
Sales to Customers	$ 795	$ 735	881
Percentage Change In Sales By Segment Of Business	8.20%	(16.50%)
PROCRIT/EPREX | Pharmaceutical | Cardiovascular/Metabolism/Other
Segment Reporting Information [Line Items]
Sales to Customers	$ 552	$ 790	988
Percentage Change In Sales By Segment Of Business	(30.20%)	(20.00%)
HIPS | Medical Devices | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,280	$ 1,438	1,418
Percentage Change In Sales By Segment Of Business	(11.00%)	1.40%
KNEES | Medical Devices | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,170	$ 1,480	1,502
Percentage Change In Sales By Segment Of Business	(21.00%)	(1.40%)
TRAUMA | Medical Devices | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers	$ 2,614	$ 2,720	2,699
Percentage Change In Sales By Segment Of Business	(3.90%)	0.80%
SPINE & OTHER | Medical Devices | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers	$ 2,699	$ 3,201	3,266
Percentage Change In Sales By Segment Of Business	(15.70%)	(2.00%)
ADVANCED | Medical Devices | Surgery
Segment Reporting Information [Line Items]
Sales to Customers	$ 3,839	$ 4,095	4,002
Percentage Change In Sales By Segment Of Business	(6.20%)	2.30%
GENERAL | Medical Devices | Surgery
Segment Reporting Information [Line Items]
Sales to Customers	$ 4,392	$ 5,406	5,899
Percentage Change In Sales By Segment Of Business	(18.80%)	(8.40%)
CONTACT LENSES/OTHER | Medical Devices | Vision
Segment Reporting Information [Line Items]
Sales to Customers	$ 2,994	$ 3,392	3,302
Percentage Change In Sales By Segment Of Business	(11.70%)	2.70%
SURGICAL | Medical Devices | Vision
Segment Reporting Information [Line Items]
Sales to Customers	$ 925	$ 1,232	1,251
Percentage Change In Sales By Segment Of Business	(24.90%)	(1.60%)
Skin health/Beauty | Consumer
Segment Reporting Information [Line Items]
Sales to Customers	$ 4,450	$ 4,593	4,382
Percentage Change In Sales By Segment Of Business	(3.10%)	4.80%
United States
Segment Reporting Information [Line Items]
Sales to Customers	$ 43,133	$ 42,097	41,884
Percentage Change In Sales By Segment Of Business	2.50%	0.50%
United States | Consumer
Segment Reporting Information [Line Items]
Sales to Customers	$ 6,362	$ 5,839	5,761
Percentage Change In Sales By Segment Of Business	9.00%	1.40%
United States | Pharmaceutical
Segment Reporting Information [Line Items]
Sales to Customers	$ 25,735	$ 23,874	23,286
Percentage Change In Sales By Segment Of Business	7.80%	2.50%
United States | Pharmaceutical | Immunology
Segment Reporting Information [Line Items]
Sales to Customers	$ 10,175	$ 9,641	9,073
Percentage Change In Sales By Segment Of Business	5.50%	6.30%
United States | Pharmaceutical | Infectious Diseases
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,735	$ 1,597	1,378
Percentage Change In Sales By Segment Of Business	8.60%	15.90%
United States | Pharmaceutical | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers	$ 3,091	$ 2,919	2,574
Percentage Change In Sales By Segment Of Business	5.90%	13.40%
United States | Pharmaceutical | Oncology
Segment Reporting Information [Line Items]
Sales to Customers	$ 5,092	$ 4,299	4,331
Percentage Change In Sales By Segment Of Business	18.50%	(0.70%)
United States | Pharmaceutical | Pulmonary Hypertension
Segment Reporting Information [Line Items]
Sales to Customers	$ 2,133	$ 1,684	1,651
Percentage Change In Sales By Segment Of Business	26.60%	2.00%
United States | Pharmaceutical | Cardiovascular/Metabolism/Other
Segment Reporting Information [Line Items]
Sales to Customers	$ 3,509	$ 3,734	4,279
Percentage Change In Sales By Segment Of Business	(6.00%)	(12.70%)
United States | Pharmaceutical | OPSUMIT
Segment Reporting Information [Line Items]
Percentage Change In Sales By Segment Of Business		9.40%
United States | Medical Devices
Segment Reporting Information [Line Items]
Sales to Customers	$ 11,036	$ 12,384	12,837
Percentage Change In Sales By Segment Of Business	(10.90%)	(3.50%)
United States | Medical Devices | Diabetes Care
Segment Reporting Information [Line Items]
Sales to Customers			371
United States | Medical Devices | Interventional Solutions
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,452	$ 1,443	1,283
Percentage Change In Sales By Segment Of Business	0.60%	12.50%
United States | Medical Devices | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers	$ 4,779	$ 5,319	5,281
Percentage Change In Sales By Segment Of Business	(10.20%)	0.70%
United States | Medical Devices | Surgery
Segment Reporting Information [Line Items]
Sales to Customers	$ 3,249	$ 3,828	4,125
Percentage Change In Sales By Segment Of Business	(15.10%)	(7.20%)
United States | Medical Devices | Vision
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,557	$ 1,794	1,777
Percentage Change In Sales By Segment Of Business	(13.20%)	0.90%
United States | Baby Care | Consumer
Segment Reporting Information [Line Items]
Sales to Customers	$ 376	$ 362	422
Percentage Change In Sales By Segment Of Business	3.70%	(14.20%)
United States | Oral Care | Consumer
Segment Reporting Information [Line Items]
Sales to Customers	$ 683	$ 621	637
Percentage Change In Sales By Segment Of Business	9.90%	(2.50%)
United States | OTC | Consumer
Segment Reporting Information [Line Items]
Sales to Customers	$ 2,460	$ 2,010	1,850
Percentage Change In Sales By Segment Of Business	22.40%	8.60%
United States | Women's Health | Consumer
Segment Reporting Information [Line Items]
Sales to Customers	$ 13	$ 12	13
Percentage Change In Sales By Segment Of Business	8.20%	(5.50%)
United States | Wound Care and Other | Consumer
Segment Reporting Information [Line Items]
Sales to Customers	$ 480	$ 441	436
Percentage Change In Sales By Segment Of Business	8.90%	1.20%
United States | Remicade | Pharmaceutical | Immunology
Segment Reporting Information [Line Items]
Sales to Customers	$ 2,508	$ 3,079	3,664
Percentage Change In Sales By Segment Of Business	(18.50%)	(16.00%)
United States | Simponi/Simponi Aria | Pharmaceutical | Immunology
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,155	$ 1,159	1,051
Percentage Change In Sales By Segment Of Business	(0.30%)	10.20%
United States | Stelara | Pharmaceutical | Immunology
Segment Reporting Information [Line Items]
Sales to Customers	$ 5,240	$ 4,346	3,469
Percentage Change In Sales By Segment Of Business	20.60%	25.30%
United States | Tremfya | Pharmaceutical | Immunology
Segment Reporting Information [Line Items]
Sales to Customers	$ 926	$ 764	453
Percentage Change In Sales By Segment Of Business	21.30%	68.50%
United States | Other Immunology | Pharmaceutical | Immunology
Segment Reporting Information [Line Items]
Sales to Customers	$ 0	$ 0	0
Percentage Change In Sales By Segment Of Business	0.00%	0.00%
United States | EDURANT/rilpivirine | Pharmaceutical | Infectious Diseases
Segment Reporting Information [Line Items]
Sales to Customers	$ 44	$ 50	58
Percentage Change In Sales By Segment Of Business	(11.20%)	(13.70%)
United States | PREZISTA/PREZCOBIX/REZOLSTA/SYMTUZA | Pharmaceutical | Infectious Diseases
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,587	$ 1,422	1,169
Percentage Change In Sales By Segment Of Business	11.60%	21.60%
United States | Other Infectious Diseases | Pharmaceutical | Infectious Diseases
Segment Reporting Information [Line Items]
Sales to Customers	$ 104	$ 126	151
Percentage Change In Sales By Segment Of Business	(17.60%)	(16.50%)
United States | CONCERTA/Methylphenidate | Pharmaceutical | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers	$ 183	$ 233	229
Percentage Change In Sales By Segment Of Business	(21.40%)	1.70%
United States | INVEGA SUSTENNA/XEPLION/TRINZA/TREVICTA | Pharmaceutical | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers	$ 2,314	$ 2,107	1,791
Percentage Change In Sales By Segment Of Business	9.80%	17.60%
United States | RISPERDAL CONSTA | Pharmaceutical | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers	$ 296	$ 314	315
Percentage Change In Sales By Segment Of Business	(5.90%)	(0.30%)
United States | OTHER NEUROSCIENCE | Pharmaceutical | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers	$ 298	$ 266	239
Percentage Change In Sales By Segment Of Business	12.40%	11.40%
United States | DARZALEX | Pharmaceutical | Oncology
Segment Reporting Information [Line Items]
Sales to Customers	$ 2,232	$ 1,567	1,203
Percentage Change In Sales By Segment Of Business	42.40%	30.30%
United States | Erleada | Pharmaceutical | Oncology
Segment Reporting Information [Line Items]
Sales to Customers	$ 583	$ 297	124
Percentage Change In Sales By Segment Of Business	96.10%
United States | IMBRUVICA | Pharmaceutical | Oncology
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,821	$ 1,555	1,129
Percentage Change In Sales By Segment Of Business	17.10%	37.70%
United States | VELCADE | Pharmaceutical | Oncology
Segment Reporting Information [Line Items]
Sales to Customers	$ 0	$ 0	0
Percentage Change In Sales By Segment Of Business	0.00%	0.00%
United States | ZYTIGA | Pharmaceutical | Oncology
Segment Reporting Information [Line Items]
Sales to Customers	$ 373	$ 810	1,771
Percentage Change In Sales By Segment Of Business	(54.00%)	(54.30%)
United States | Other Oncology | Pharmaceutical | Oncology
Segment Reporting Information [Line Items]
Sales to Customers	$ 83	$ 70	104
Percentage Change In Sales By Segment Of Business	19.20%	(32.70%)
United States | OPSUMIT | Pharmaceutical | Pulmonary Hypertension
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,008	$ 766	700
Percentage Change In Sales By Segment Of Business	31.70%
United States | UPTRAVI | Pharmaceutical | Pulmonary Hypertension
Segment Reporting Information [Line Items]
Sales to Customers	$ 955	$ 714	598
Percentage Change In Sales By Segment Of Business	33.80%	19.30%
United States | Other | Pharmaceutical | Pulmonary Hypertension
Segment Reporting Information [Line Items]
Sales to Customers	$ 169	$ 205	353
Percentage Change In Sales By Segment Of Business	(17.60%)	(41.90%)
United States | Other | Pharmaceutical | Cardiovascular/Metabolism/Other
Segment Reporting Information [Line Items]
Sales to Customers	$ 323	$ 380	417
Percentage Change In Sales By Segment Of Business	(15.10%)	(9.10%)
United States | Xarelto | Pharmaceutical | Cardiovascular/Metabolism/Other
Segment Reporting Information [Line Items]
Sales to Customers	$ 2,345	$ 2,313	2,477
Percentage Change In Sales By Segment Of Business	1.40%	(6.60%)
United States | INVOKANA/INVOKAMET | Pharmaceutical | Cardiovascular/Metabolism/Other
Segment Reporting Information [Line Items]
Sales to Customers	$ 564	$ 536	711
Percentage Change In Sales By Segment Of Business	5.20%	(24.60%)
United States | PROCRIT/EPREX | Pharmaceutical | Cardiovascular/Metabolism/Other
Segment Reporting Information [Line Items]
Sales to Customers	$ 277	$ 505	674
Percentage Change In Sales By Segment Of Business	(45.10%)	(25.10%)
United States | HIPS | Medical Devices | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers	$ 793	$ 863	841
Percentage Change In Sales By Segment Of Business	(8.20%)	2.60%
United States | KNEES | Medical Devices | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers	$ 743	$ 889	911
Percentage Change In Sales By Segment Of Business	(16.40%)	(2.40%)
United States | TRAUMA | Medical Devices | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,648	$ 1,652	1,599
Percentage Change In Sales By Segment Of Business	(0.20%)	3.30%
United States | SPINE & OTHER | Medical Devices | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,595	$ 1,915	1,930
Percentage Change In Sales By Segment Of Business	(16.70%)	(0.80%)
United States | ADVANCED | Medical Devices | Surgery
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,535	$ 1,637	1,657
Percentage Change In Sales By Segment Of Business	(6.20%)	(1.20%)
United States | GENERAL | Medical Devices | Surgery
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,714	$ 2,192	2,468
Percentage Change In Sales By Segment Of Business	(21.80%)	(11.20%)
United States | CONTACT LENSES/OTHER | Medical Devices | Vision
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,213	$ 1,304	1,237
Percentage Change In Sales By Segment Of Business	(7.00%)	5.40%
United States | SURGICAL | Medical Devices | Vision
Segment Reporting Information [Line Items]
Sales to Customers	$ 344	$ 490	540
Percentage Change In Sales By Segment Of Business	(29.70%)	(9.40%)
United States | Skin health/Beauty | Consumer
Segment Reporting Information [Line Items]
Sales to Customers	$ 2,350	$ 2,392	2,403
Percentage Change In Sales By Segment Of Business	(1.70%)	(0.40%)
Non-US
Segment Reporting Information [Line Items]
Sales to Customers	$ 39,451	$ 39,962	39,697
Percentage Change In Sales By Segment Of Business	(1.30%)	0.70%
Non-US | Consumer
Segment Reporting Information [Line Items]
Sales to Customers	$ 7,691	$ 8,059	8,092
Percentage Change In Sales By Segment Of Business	(4.60%)	(0.40%)
Non-US | Pharmaceutical
Segment Reporting Information [Line Items]
Sales to Customers	$ 19,837	$ 18,324	17,448
Percentage Change In Sales By Segment Of Business	8.30%	5.00%
Non-US | Pharmaceutical | Immunology
Segment Reporting Information [Line Items]
Sales to Customers	$ 4,880	$ 4,309	4,047
Percentage Change In Sales By Segment Of Business	13.20%	6.50%
Non-US | Pharmaceutical | Infectious Diseases
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,839	$ 1,815	1,926
Percentage Change In Sales By Segment Of Business	1.30%	(5.70%)
Non-US | Pharmaceutical | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers	$ 3,457	$ 3,409	3,503
Percentage Change In Sales By Segment Of Business	1.40%	(2.70%)
Non-US | Pharmaceutical | Oncology
Segment Reporting Information [Line Items]
Sales to Customers	$ 7,275	$ 6,393	5,513
Percentage Change In Sales By Segment Of Business	13.80%	16.00%
Non-US | Pharmaceutical | Pulmonary Hypertension
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,015	$ 939	922
Percentage Change In Sales By Segment Of Business	8.20%	1.90%
Non-US | Pharmaceutical | Cardiovascular/Metabolism/Other
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,369	$ 1,458	1,537
Percentage Change In Sales By Segment Of Business	(6.10%)	(5.20%)
Non-US | Pharmaceutical | OPSUMIT
Segment Reporting Information [Line Items]
Percentage Change In Sales By Segment Of Business		9.00%
Non-US | Medical Devices
Segment Reporting Information [Line Items]
Sales to Customers	$ 11,923	$ 13,579	14,157
Percentage Change In Sales By Segment Of Business	(12.20%)	(4.10%)
Non-US | Medical Devices | Diabetes Care
Segment Reporting Information [Line Items]
Sales to Customers			638
Non-US | Medical Devices | Interventional Solutions
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,594	$ 1,554	1,363
Percentage Change In Sales By Segment Of Business	2.60%	14.00%
Non-US | Medical Devices | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers	$ 2,984	$ 3,520	3,604
Percentage Change In Sales By Segment Of Business	(15.20%)	(2.30%)
Non-US | Medical Devices | Surgery
Segment Reporting Information [Line Items]
Sales to Customers	$ 4,983	$ 5,673	5,776
Percentage Change In Sales By Segment Of Business	(12.20%)	(1.80%)
Non-US | Medical Devices | Vision
Segment Reporting Information [Line Items]
Sales to Customers	$ 2,362	$ 2,830	2,776
Percentage Change In Sales By Segment Of Business	(16.50%)	2.00%
Non-US | Baby Care | Consumer
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,141	$ 1,313	1,436
Percentage Change In Sales By Segment Of Business	(13.10%)	(8.60%)
Non-US | Oral Care | Consumer
Segment Reporting Information [Line Items]
Sales to Customers	$ 958	$ 906	918
Percentage Change In Sales By Segment Of Business	5.70%	(1.20%)
Non-US | OTC | Consumer
Segment Reporting Information [Line Items]
Sales to Customers	$ 2,364	$ 2,434	2,484
Percentage Change In Sales By Segment Of Business	(2.90%)	(2.00%)
Non-US | Women's Health | Consumer
Segment Reporting Information [Line Items]
Sales to Customers	$ 888	$ 974	1,036
Percentage Change In Sales By Segment Of Business	(8.80%)	(6.00%)
Non-US | Wound Care and Other | Consumer
Segment Reporting Information [Line Items]
Sales to Customers	$ 240	$ 230	239
Percentage Change In Sales By Segment Of Business	4.10%	(3.90%)
Non-US | Remicade | Pharmaceutical | Immunology
Segment Reporting Information [Line Items]
Sales to Customers	$ 893	$ 1,007	1,226
Percentage Change In Sales By Segment Of Business	(11.40%)	(17.80%)
Non-US | Simponi/Simponi Aria | Pharmaceutical | Immunology
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,088	$ 1,029	1,033
Percentage Change In Sales By Segment Of Business	5.80%	(0.40%)
Non-US | Stelara | Pharmaceutical | Immunology
Segment Reporting Information [Line Items]
Sales to Customers	$ 2,467	$ 2,015	1,687
Percentage Change In Sales By Segment Of Business	22.40%	19.40%
Non-US | Tremfya | Pharmaceutical | Immunology
Segment Reporting Information [Line Items]
Sales to Customers	$ 421	$ 248	91
Percentage Change In Sales By Segment Of Business	69.90%
Non-US | Other Immunology | Pharmaceutical | Immunology
Segment Reporting Information [Line Items]
Sales to Customers	$ 11	$ 10	10
Percentage Change In Sales By Segment Of Business	6.40%	4.50%
Non-US | EDURANT/rilpivirine | Pharmaceutical | Infectious Diseases
Segment Reporting Information [Line Items]
Sales to Customers	$ 920	$ 812	758
Percentage Change In Sales By Segment Of Business	13.30%	7.10%
Non-US | PREZISTA/PREZCOBIX/REZOLSTA/SYMTUZA | Pharmaceutical | Infectious Diseases
Segment Reporting Information [Line Items]
Sales to Customers	$ 597	$ 689	786
Percentage Change In Sales By Segment Of Business	(13.40%)	(12.30%)
Non-US | Other Infectious Diseases | Pharmaceutical | Infectious Diseases
Segment Reporting Information [Line Items]
Sales to Customers	$ 323	$ 315	382
Percentage Change In Sales By Segment Of Business	2.60%	(17.60%)
Non-US | CONCERTA/Methylphenidate | Pharmaceutical | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers	$ 439	$ 463	434
Percentage Change In Sales By Segment Of Business	(5.10%)	6.60%
Non-US | INVEGA SUSTENNA/XEPLION/TRINZA/TREVICTA | Pharmaceutical | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,339	$ 1,224	1,137
Percentage Change In Sales By Segment Of Business	9.40%	7.70%
Non-US | RISPERDAL CONSTA | Pharmaceutical | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers	$ 346	$ 374	422
Percentage Change In Sales By Segment Of Business	(7.50%)	(11.40%)
Non-US | OTHER NEUROSCIENCE | Pharmaceutical | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,334	$ 1,349	1,510
Percentage Change In Sales By Segment Of Business	(1.10%)	(10.70%)
Non-US | DARZALEX | Pharmaceutical | Oncology
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,958	$ 1,430	822
Percentage Change In Sales By Segment Of Business	36.90%	73.90%
Non-US | Erleada | Pharmaceutical | Oncology
Segment Reporting Information [Line Items]
Sales to Customers	$ 176	$ 35	0
Non-US | IMBRUVICA | Pharmaceutical | Oncology
Segment Reporting Information [Line Items]
Sales to Customers	$ 2,307	$ 1,856	1,486
Percentage Change In Sales By Segment Of Business	24.30%	24.90%
Non-US | VELCADE | Pharmaceutical | Oncology
Segment Reporting Information [Line Items]
Sales to Customers	$ 408	$ 751	1,116
Percentage Change In Sales By Segment Of Business	(45.70%)	(32.70%)
Non-US | ZYTIGA | Pharmaceutical | Oncology
Segment Reporting Information [Line Items]
Sales to Customers	$ 2,097	$ 1,985	1,727
Percentage Change In Sales By Segment Of Business	5.60%	15.00%
Non-US | Other Oncology | Pharmaceutical | Oncology
Segment Reporting Information [Line Items]
Sales to Customers	$ 330	$ 336	362
Percentage Change In Sales By Segment Of Business	(1.90%)	(7.20%)
Non-US | OPSUMIT | Pharmaceutical | Pulmonary Hypertension
Segment Reporting Information [Line Items]
Sales to Customers	$ 631	$ 562	515
Percentage Change In Sales By Segment Of Business	12.30%
Non-US | UPTRAVI | Pharmaceutical | Pulmonary Hypertension
Segment Reporting Information [Line Items]
Sales to Customers	$ 138	$ 105	65
Percentage Change In Sales By Segment Of Business	30.90%	62.40%
Non-US | Other | Pharmaceutical | Pulmonary Hypertension
Segment Reporting Information [Line Items]
Sales to Customers	$ 247	$ 272	342
Percentage Change In Sales By Segment Of Business	(9.20%)	(20.50%)
Non-US | Other | Pharmaceutical | Cardiovascular/Metabolism/Other
Segment Reporting Information [Line Items]
Sales to Customers	$ 864	$ 974	1,053
Percentage Change In Sales By Segment Of Business	(11.30%)	(7.60%)
Non-US | Xarelto | Pharmaceutical | Cardiovascular/Metabolism/Other
Segment Reporting Information [Line Items]
Sales to Customers	$ 0	$ 0	0
Percentage Change In Sales By Segment Of Business	0.00%	0.00%
Non-US | INVOKANA/INVOKAMET | Pharmaceutical | Cardiovascular/Metabolism/Other
Segment Reporting Information [Line Items]
Sales to Customers	$ 231	$ 199	170
Percentage Change In Sales By Segment Of Business	16.30%	17.30%
Non-US | PROCRIT/EPREX | Pharmaceutical | Cardiovascular/Metabolism/Other
Segment Reporting Information [Line Items]
Sales to Customers	$ 274	$ 285	314
Percentage Change In Sales By Segment Of Business	(3.80%)	(9.20%)
Non-US | HIPS | Medical Devices | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers	$ 487	$ 575	577
Percentage Change In Sales By Segment Of Business	(15.30%)	(0.30%)
Non-US | KNEES | Medical Devices | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers	$ 427	$ 591	591
Percentage Change In Sales By Segment Of Business	(27.80%)	0.00%
Non-US | TRAUMA | Medical Devices | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers	$ 966	$ 1,068	1,100
Percentage Change In Sales By Segment Of Business	(9.60%)	(2.90%)
Non-US | SPINE & OTHER | Medical Devices | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,104	$ 1,286	1,336
Percentage Change In Sales By Segment Of Business	(14.10%)	(3.80%)
Non-US | ADVANCED | Medical Devices | Surgery
Segment Reporting Information [Line Items]
Sales to Customers	$ 2,304	$ 2,458	2,345
Percentage Change In Sales By Segment Of Business	(6.20%)	4.80%
Non-US | GENERAL | Medical Devices | Surgery
Segment Reporting Information [Line Items]
Sales to Customers	$ 2,679	$ 3,215	3,431
Percentage Change In Sales By Segment Of Business	(16.70%)	(6.30%)
Non-US | CONTACT LENSES/OTHER | Medical Devices | Vision
Segment Reporting Information [Line Items]
Sales to Customers	$ 1,781	$ 2,088	2,065
Percentage Change In Sales By Segment Of Business	(14.70%)	1.10%
Non-US | SURGICAL | Medical Devices | Vision
Segment Reporting Information [Line Items]
Sales to Customers	$ 581	$ 742	711
Percentage Change In Sales By Segment Of Business	(21.70%)	4.40%
Non-US | Skin health/Beauty | Consumer
Segment Reporting Information [Line Items]
Sales to Customers	$ 2,100	$ 2,201	1,979
Percentage Change In Sales By Segment Of Business	(4.60%)	11.20%
UNITED STATES Exports | Remicade | Pharmaceutical | Immunology
Segment Reporting Information [Line Items]
Sales to Customers	$ 346	$ 294	$ 436
Percentage Change In Sales By Segment Of Business	18.00%	(32.70%)
Auris Health | Pharmaceutical
Segment Reporting Information [Line Items]
Business Combination, Acquisition Related Costs		$ 100
Pending Litigation
Segment Reporting Information [Line Items]
Loss contingency, estimate of possible loss				$ 5,000	$ 4,000