Segments of Business and Geographic Areas - Sales by Segment of Business (Details) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2023 USD ($)	Oct. 01, 2023 USD ($)	Jul. 02, 2023 USD ($)	Apr. 02, 2023 USD ($)	Jan. 01, 2023 USD ($)	Oct. 02, 2022 USD ($)	Jul. 03, 2022 USD ($)	Apr. 03, 2022 USD ($)	Dec. 31, 2023 USD ($) segment	Jan. 01, 2023 USD ($)	Jan. 02, 2022 USD ($) Segment
Segment Reporting Information [Line Items]
Number of segments									2		3
Sales to Customers	$ 21,395	$ 21,351	$ 21,519	$ 20,894	$ 19,939	$ 19,996	$ 20,215	$ 19,840	$ 85,159	$ 79,990	$ 78,740
% Change									6.50%	1.60%
Innovative Medicine
Segment Reporting Information [Line Items]
Sales to Customers	13,722	13,893	13,731	13,413	13,163	13,214	13,317	12,869	$ 54,759	$ 52,563	51,680
% Change									4.20%	1.70%
Innovative Medicine | Immunology
Segment Reporting Information [Line Items]
Sales to Customers									$ 18,052	$ 16,935	16,750
% Change									6.60%	1.10%
Innovative Medicine | Infectious Diseases
Segment Reporting Information [Line Items]
Sales to Customers									$ 4,418	$ 5,449	5,825
% Change									(18.90%)	(6.50%)
Innovative Medicine | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers									$ 7,140	$ 6,893	6,988
% Change									3.60%	(1.40%)
Innovative Medicine | Oncology
Segment Reporting Information [Line Items]
Sales to Customers									$ 17,661	$ 15,983	14,548
% Change									10.50%	9.90%
Innovative Medicine | Pulmonary Hypertension
Segment Reporting Information [Line Items]
Sales to Customers									$ 3,815	$ 3,417	3,450
% Change									11.60%	(1.00%)
Innovative Medicine | Cardiovascular/Metabolism/Other
Segment Reporting Information [Line Items]
Sales to Customers									$ 3,671	$ 3,887	4,119
% Change									(5.50%)	(5.60%)
MedTech
Segment Reporting Information [Line Items]
Sales to Customers	$ 7,673	$ 7,458	$ 7,788	$ 7,481	$ 6,776	$ 6,782	$ 6,898	$ 6,971	$ 30,400	$ 27,427	27,060
% Change									10.80%	1.40%
MedTech | Interventional Solutions
Segment Reporting Information [Line Items]
Sales to Customers									$ 6,350	$ 4,300	3,971
% Change									47.70%	8.30%
MedTech | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers									$ 8,942	$ 8,587	8,588
% Change									4.10%	0.00%
MedTech | Surgery
Segment Reporting Information [Line Items]
Sales to Customers									$ 10,037	$ 9,690	9,812
% Change									3.60%	(1.20%)
MedTech | Vision
Segment Reporting Information [Line Items]
Sales to Customers									$ 5,072	$ 4,849	4,688
% Change									4.60%	3.40%
Remicade | Innovative Medicine | Immunology
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,839	$ 2,343	3,190
% Change									(21.50%)	(26.60%)
Simponi/Simponi Aria | Innovative Medicine | Immunology
Segment Reporting Information [Line Items]
Sales to Customers									$ 2,197	$ 2,184	2,276
% Change									0.60%	(4.00%)
Stelara | Innovative Medicine | Immunology
Segment Reporting Information [Line Items]
Sales to Customers									$ 10,858	$ 9,723	9,134
% Change									11.70%	6.50%
Tremfya | Innovative Medicine | Immunology
Segment Reporting Information [Line Items]
Sales to Customers									$ 3,147	$ 2,668	2,127
% Change									17.90%	25.40%
Other Immunology | Innovative Medicine | Immunology
Segment Reporting Information [Line Items]
Sales to Customers									$ 11	$ 17	24
% Change									(33.80%)	(28.20%)
COVID-19 | Innovative Medicine | Infectious Diseases
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,117	$ 2,179	2,385
% Change									(48.80%)	(8.60%)
EDURANT/rilpivirine | Innovative Medicine | Infectious Diseases
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,150	$ 1,008	994
% Change									14.10%	1.50%
PREZISTA/PREZCOBIX/REZOLSTA/SYMTUZA | Innovative Medicine | Infectious Diseases
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,854	$ 1,943	2,083
% Change									(4.60%)	(6.70%)
Other Infectious Diseases | Innovative Medicine | Infectious Diseases
Segment Reporting Information [Line Items]
Sales to Customers									$ 297	$ 318	363
% Change									(6.70%)	(12.30%)
CONCERTA/Methylphenidate | Innovative Medicine | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers									$ 783	$ 644	667
% Change									21.60%	(3.50%)
INVEGA SUSTENNA/XEPLION/TRINZA/TREVICTA | Innovative Medicine | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers									$ 4,115	$ 4,140	4,022
% Change									(0.60%)	3.00%
RISPERDAL CONSTA | Innovative Medicine | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers									$ 689	$ 374	224
% Change									84.10%	67.00%
OTHER NEUROSCIENCE | Innovative Medicine | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,553	$ 1,734	2,074
% Change									(10.40%)	(16.40%)
CARVYKTI | Innovative Medicine | Oncology
Segment Reporting Information [Line Items]
Sales to Customers									$ 500	$ 133	0
DARZALEX | Innovative Medicine | Oncology
Segment Reporting Information [Line Items]
Sales to Customers									$ 9,744	$ 7,977	6,023
% Change									22.20%	32.40%
ERLEADA | Innovative Medicine | Oncology
Segment Reporting Information [Line Items]
Sales to Customers									$ 2,387	$ 1,881	1,291
% Change									26.90%	45.70%
IMBRUVICA | Innovative Medicine | Oncology
Segment Reporting Information [Line Items]
Sales to Customers									$ 3,264	$ 3,784	4,369
% Change									(13.70%)	(13.40%)
ZYTIGA/abiraterone acetate | Innovative Medicine | Oncology
Segment Reporting Information [Line Items]
Sales to Customers									$ 887	$ 1,770	2,297
% Change									(49.90%)	(22.90%)
Other Oncology | Innovative Medicine | Oncology
Segment Reporting Information [Line Items]
Sales to Customers									$ 879	$ 438	568
% Change										(22.90%)
OPSUMIT | Innovative Medicine | Pulmonary Hypertension
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,973	$ 1,783	1,819
% Change									10.60%	(2.00%)
UPTRAVI | Innovative Medicine | Pulmonary Hypertension
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,582	$ 1,322	1,237
% Change									19.70%	6.90%
Other | Innovative Medicine | Pulmonary Hypertension
Segment Reporting Information [Line Items]
Sales to Customers									$ 260	$ 313	395
% Change									(16.70%)	(20.80%)
Other | Innovative Medicine | Cardiovascular/Metabolism/Other
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,306	$ 1,414	1,682
% Change									(7.60%)	(15.90%)
XARELTO | Innovative Medicine | Cardiovascular/Metabolism/Other
Segment Reporting Information [Line Items]
Sales to Customers									$ 2,365	$ 2,473	2,438
% Change									(4.40%)	1.40%
ELECTROPHYSIOLOGY | MedTech | Interventional Solutions
Segment Reporting Information [Line Items]
Sales to Customers									$ 4,688	$ 3,937	3,623
% Change									19.10%	8.70%
Abiomed | MedTech | Interventional Solutions
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,306	$ 31	0
Other Interventional Solutions | MedTech | Interventional Solutions
Segment Reporting Information [Line Items]
Sales to Customers									$ 356	$ 332	348
% Change									7.10%	(4.60%)
HIPS | MedTech | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,560	$ 1,514	1,480
% Change									3.00%	2.30%
KNEES | MedTech | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,456	$ 1,359	1,325
% Change									7.10%	2.60%
TRAUMA | MedTech | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers									$ 2,979	$ 2,871	2,885
% Change									3.80%	(0.50%)
SPINE,SPORTS & OTHER | MedTech | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers									$ 2,947	$ 2,843	2,898
% Change									3.70%	(1.90%)
ADVANCED | MedTech | Surgery
Segment Reporting Information [Line Items]
Sales to Customers									$ 4,671	$ 4,569	4,622
% Change									2.20%	(1.10%)
GENERAL | MedTech | Surgery
Segment Reporting Information [Line Items]
Sales to Customers									$ 5,366	$ 5,121	5,190
% Change									4.80%	(1.30%)
CONTACT LENSES/OTHER | MedTech | Vision
Segment Reporting Information [Line Items]
Sales to Customers									$ 3,702	$ 3,543	3,440
% Change									4.50%	3.00%
SURGICAL | MedTech | Vision
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,370	$ 1,306	1,248
% Change									4.90%	4.60%
United States
Segment Reporting Information [Line Items]
Sales to Customers									$ 46,444	$ 41,981	40,640
% Change									10.60%	3.30%
United States | Innovative Medicine
Segment Reporting Information [Line Items]
Sales to Customers									$ 31,169	$ 28,604	27,954
% Change									9.00%	2.30%
United States | Innovative Medicine | Immunology
Segment Reporting Information [Line Items]
Sales to Customers									$ 11,539	$ 11,036	10,843
% Change									4.60%	1.80%
United States | Innovative Medicine | Infectious Diseases
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,500	$ 1,680	2,249
% Change									(10.70%)	(25.30%)
United States | Innovative Medicine | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers									$ 4,065	$ 3,570	3,347
% Change									13.90%	6.70%
United States | Innovative Medicine | Oncology
Segment Reporting Information [Line Items]
Sales to Customers									$ 8,462	$ 6,930	5,958
% Change									22.10%	16.30%
United States | Innovative Medicine | Pulmonary Hypertension
Segment Reporting Information [Line Items]
Sales to Customers									$ 2,697	$ 2,346	2,365
% Change									15.00%	(0.80%)
United States | Innovative Medicine | Cardiovascular/Metabolism/Other
Segment Reporting Information [Line Items]
Sales to Customers									$ 2,906	$ 3,042	3,192
% Change									(4.50%)	(4.70%)
United States | MedTech
Segment Reporting Information [Line Items]
Sales to Customers									$ 15,275	$ 13,377	12,686
% Change									14.20%	5.40%
United States | MedTech | Interventional Solutions
Segment Reporting Information [Line Items]
Sales to Customers									$ 3,633	$ 2,169	1,836
% Change									67.50%	18.20%
United States | MedTech | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers									$ 5,525	$ 5,321	5,126
% Change									3.80%	3.80%
United States | MedTech | Surgery
Segment Reporting Information [Line Items]
Sales to Customers									$ 4,031	$ 3,897	3,867
% Change									3.40%	0.80%
United States | MedTech | Vision
Segment Reporting Information [Line Items]
Sales to Customers									$ 2,086	$ 1,990	1,857
% Change									4.80%	7.20%
United States | Remicade | Innovative Medicine | Immunology
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,143	$ 1,417	2,019
% Change									(19.30%)	(29.80%)
United States | Simponi/Simponi Aria | Innovative Medicine | Immunology
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,124	$ 1,166	1,127
% Change									(3.60%)	3.50%
United States | Stelara | Innovative Medicine | Immunology
Segment Reporting Information [Line Items]
Sales to Customers									$ 6,966	$ 6,388	5,938
% Change									9.00%	7.60%
United States | Tremfya | Innovative Medicine | Immunology
Segment Reporting Information [Line Items]
Sales to Customers									$ 2,147	$ 1,844	1,503
% Change									16.50%	22.70%
United States | Other Immunology | Innovative Medicine | Immunology
Segment Reporting Information [Line Items]
Sales to Customers									$ 11	$ 17	21
% Change									(33.80%)	(18.40%)
United States | COVID-19 | Innovative Medicine | Infectious Diseases
Segment Reporting Information [Line Items]
Sales to Customers									$ 0	$ 120	634
% Change										(81.10%)
United States | EDURANT/rilpivirine | Innovative Medicine | Infectious Diseases
Segment Reporting Information [Line Items]
Sales to Customers									$ 35	$ 36	41
% Change									(3.70%)	(10.80%)
United States | PREZISTA/PREZCOBIX/REZOLSTA/SYMTUZA | Innovative Medicine | Infectious Diseases
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,446	$ 1,494	1,508
% Change									(3.20%)	(1.00%)
United States | Other Infectious Diseases | Innovative Medicine | Infectious Diseases
Segment Reporting Information [Line Items]
Sales to Customers									$ 19	$ 30	66
% Change									(34.50%)	(55.50%)
United States | CONCERTA/Methylphenidate | Innovative Medicine | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers									$ 230	$ 151	172
% Change									52.50%	(12.50%)
United States | INVEGA SUSTENNA/XEPLION/TRINZA/TREVICTA | Innovative Medicine | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers									$ 2,897	$ 2,714	2,550
% Change									6.70%	6.50%
United States | RISPERDAL CONSTA | Innovative Medicine | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers									$ 589	$ 328	198
% Change									79.70%	65.70%
United States | OTHER NEUROSCIENCE | Innovative Medicine | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers									$ 349	$ 376	427
% Change									(7.30%)	(11.90%)
United States | CARVYKTI | Innovative Medicine | Oncology
Segment Reporting Information [Line Items]
Sales to Customers									$ 469	$ 133	0
United States | DARZALEX | Innovative Medicine | Oncology
Segment Reporting Information [Line Items]
Sales to Customers									$ 5,277	$ 4,210	3,169
% Change									25.40%	32.80%
United States | ERLEADA | Innovative Medicine | Oncology
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,065	$ 968	813
% Change									10.00%	19.20%
United States | IMBRUVICA | Innovative Medicine | Oncology
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,051	$ 1,390	1,747
% Change									(24.40%)	(20.40%)
United States | ZYTIGA/abiraterone acetate | Innovative Medicine | Oncology
Segment Reporting Information [Line Items]
Sales to Customers									$ 50	$ 74	119
% Change									(32.10%)	(37.80%)
United States | Other Oncology | Innovative Medicine | Oncology
Segment Reporting Information [Line Items]
Sales to Customers									$ 549	$ 156	110
% Change										41.80%
United States | OPSUMIT | Innovative Medicine | Pulmonary Hypertension
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,292	$ 1,132	1,147
% Change									14.10%	(1.30%)
United States | UPTRAVI | Innovative Medicine | Pulmonary Hypertension
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,326	$ 1,104	1,056
% Change									20.10%	4.50%
United States | Other | Innovative Medicine | Pulmonary Hypertension
Segment Reporting Information [Line Items]
Sales to Customers									$ 79	$ 110	163
% Change									(28.60%)	(32.30%)
United States | Other | Innovative Medicine | Cardiovascular/Metabolism/Other
Segment Reporting Information [Line Items]
Sales to Customers									$ 541	$ 569	754
% Change									(5.00%)	(24.50%)
United States | XARELTO | Innovative Medicine | Cardiovascular/Metabolism/Other
Segment Reporting Information [Line Items]
Sales to Customers									$ 2,365	$ 2,473	2,438
% Change									(4.40%)	1.40%
United States | ELECTROPHYSIOLOGY | MedTech | Interventional Solutions
Segment Reporting Information [Line Items]
Sales to Customers									$ 2,458	$ 2,036	1,730
% Change									20.70%	17.70%
United States | Abiomed | MedTech | Interventional Solutions
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,066	$ 31	0
United States | Other Interventional Solutions | MedTech | Interventional Solutions
Segment Reporting Information [Line Items]
Sales to Customers									$ 109	$ 102	106
% Change									6.70%	(3.80%)
United States | HIPS | MedTech | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers									$ 996	$ 943	878
% Change									5.60%	7.30%
United States | KNEES | MedTech | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers									$ 896	$ 851	787
% Change									5.30%	8.20%
United States | TRAUMA | MedTech | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,949	$ 1,882	1,819
% Change									3.60%	3.50%
United States | SPINE,SPORTS & OTHER | MedTech | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,684	$ 1,645	1,642
% Change									2.40%	0.20%
United States | ADVANCED | MedTech | Surgery
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,833	$ 1,784	1,761
% Change									2.80%	1.30%
United States | GENERAL | MedTech | Surgery
Segment Reporting Information [Line Items]
Sales to Customers									$ 2,198	$ 2,113	2,105
% Change									4.00%	0.40%
United States | CONTACT LENSES/OTHER | MedTech | Vision
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,626	$ 1,522	1,398
% Change									6.80%	8.90%
United States | SURGICAL | MedTech | Vision
Segment Reporting Information [Line Items]
Sales to Customers									$ 460	$ 468	459
% Change									(1.80%)	2.00%
Non-US
Segment Reporting Information [Line Items]
Sales to Customers									$ 38,715	$ 38,009	38,100
% Change									1.90%	(0.20%)
Non-US | Innovative Medicine
Segment Reporting Information [Line Items]
Sales to Customers									$ 23,590	$ 23,959	23,726
% Change									(1.50%)	1.00%
Non-US | Innovative Medicine | Immunology
Segment Reporting Information [Line Items]
Sales to Customers									$ 6,513	$ 5,899	5,907
% Change									10.40%	(0.10%)
Non-US | Innovative Medicine | Infectious Diseases
Segment Reporting Information [Line Items]
Sales to Customers									$ 2,918	$ 3,769	3,576
% Change									(22.60%)	5.40%
Non-US | Innovative Medicine | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers									$ 3,076	$ 3,323	3,641
% Change									(7.50%)	(8.70%)
Non-US | Innovative Medicine | Oncology
Segment Reporting Information [Line Items]
Sales to Customers									$ 9,199	$ 9,052	8,590
% Change									1.60%	5.40%
Non-US | Innovative Medicine | Pulmonary Hypertension
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,117	$ 1,071	1,085
% Change									4.30%	(1.30%)
Non-US | Innovative Medicine | Cardiovascular/Metabolism/Other
Segment Reporting Information [Line Items]
Sales to Customers									$ 765	$ 845	927
% Change									(9.40%)	(8.90%)
Non-US | MedTech
Segment Reporting Information [Line Items]
Sales to Customers									$ 15,125	$ 14,050	14,374
% Change									7.70%	(2.30%)
Non-US | MedTech | Interventional Solutions
Segment Reporting Information [Line Items]
Sales to Customers									$ 2,717	$ 2,131	2,135
% Change									27.50%	(0.20%)
Non-US | MedTech | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers									$ 3,417	$ 3,267	3,462
% Change									4.60%	(5.60%)
Non-US | MedTech | Surgery
Segment Reporting Information [Line Items]
Sales to Customers									$ 6,006	$ 5,793	5,945
% Change									3.70%	(2.60%)
Non-US | MedTech | Vision
Segment Reporting Information [Line Items]
Sales to Customers									$ 2,986	$ 2,859	2,831
% Change									4.50%	1.00%
Non-US | Remicade | Innovative Medicine | Immunology
Segment Reporting Information [Line Items]
Sales to Customers									$ 549	$ 722	935
% Change									(23.90%)	(22.80%)
Non-US | Simponi/Simponi Aria | Innovative Medicine | Immunology
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,073	$ 1,017	1,148
% Change									5.40%	(11.40%)
Non-US | Stelara | Innovative Medicine | Immunology
Segment Reporting Information [Line Items]
Sales to Customers									$ 3,892	$ 3,335	3,196
% Change									16.70%	4.40%
Non-US | Tremfya | Innovative Medicine | Immunology
Segment Reporting Information [Line Items]
Sales to Customers									$ 999	$ 824	624
% Change									21.20%	32.00%
Non-US | Other Immunology | Innovative Medicine | Immunology
Segment Reporting Information [Line Items]
Sales to Customers									$ 0	$ 0	3
% Change									0.00%
Non-US | COVID-19 | Innovative Medicine | Infectious Diseases
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,117	$ 2,059	1,751
% Change									(45.80%)	17.60%
Non-US | EDURANT/rilpivirine | Innovative Medicine | Infectious Diseases
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,115	$ 972	953
% Change									14.80%	2.00%
Non-US | PREZISTA/PREZCOBIX/REZOLSTA/SYMTUZA | Innovative Medicine | Infectious Diseases
Segment Reporting Information [Line Items]
Sales to Customers									$ 408	$ 449	575
% Change									(9.20%)	(21.90%)
Non-US | Other Infectious Diseases | Innovative Medicine | Infectious Diseases
Segment Reporting Information [Line Items]
Sales to Customers									$ 278	$ 289	297
% Change									(3.80%)	(2.60%)
Non-US | CONCERTA/Methylphenidate | Innovative Medicine | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers									$ 554	$ 493	495
% Change									12.20%	(0.40%)
Non-US | INVEGA SUSTENNA/XEPLION/TRINZA/TREVICTA | Innovative Medicine | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,218	$ 1,426	1,472
% Change									(14.60%)	(3.10%)
Non-US | RISPERDAL CONSTA | Innovative Medicine | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers									$ 100	$ 46	26
% Change										76.90%
Non-US | OTHER NEUROSCIENCE | Innovative Medicine | Neuroscience
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,204	$ 1,358	1,647
% Change									(11.30%)	(17.50%)
Non-US | CARVYKTI | Innovative Medicine | Oncology
Segment Reporting Information [Line Items]
Sales to Customers									$ 30	$ 0	0
Non-US | DARZALEX | Innovative Medicine | Oncology
Segment Reporting Information [Line Items]
Sales to Customers									$ 4,467	$ 3,767	2,854
% Change									18.60%	32.00%
Non-US | ERLEADA | Innovative Medicine | Oncology
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,322	$ 913	478
% Change									44.80%
Non-US | IMBRUVICA | Innovative Medicine | Oncology
Segment Reporting Information [Line Items]
Sales to Customers									$ 2,214	$ 2,394	2,622
% Change									(7.50%)	(8.70%)
Non-US | ZYTIGA/abiraterone acetate | Innovative Medicine | Oncology
Segment Reporting Information [Line Items]
Sales to Customers									$ 837	$ 1,696	2,178
% Change									(50.70%)	(22.10%)
Non-US | Other Oncology | Innovative Medicine | Oncology
Segment Reporting Information [Line Items]
Sales to Customers									$ 330	$ 283	458
% Change									16.90%	(38.20%)
Non-US | OPSUMIT | Innovative Medicine | Pulmonary Hypertension
Segment Reporting Information [Line Items]
Sales to Customers									$ 681	$ 651	672
% Change									4.60%	(3.20%)
Non-US | UPTRAVI | Innovative Medicine | Pulmonary Hypertension
Segment Reporting Information [Line Items]
Sales to Customers									$ 255	$ 218	181
% Change									17.30%	20.40%
Non-US | Other | Innovative Medicine | Pulmonary Hypertension
Segment Reporting Information [Line Items]
Sales to Customers									$ 182	$ 202	232
% Change									(10.30%)	(12.80%)
Non-US | Other | Innovative Medicine | Cardiovascular/Metabolism/Other
Segment Reporting Information [Line Items]
Sales to Customers									$ 765	$ 845	927
% Change									(9.40%)	(8.80%)
Non-US | XARELTO | Innovative Medicine | Cardiovascular/Metabolism/Other
Segment Reporting Information [Line Items]
Sales to Customers									$ 0	$ 0	0
% Change									0.00%	0.00%
Non-US | ELECTROPHYSIOLOGY | MedTech | Interventional Solutions
Segment Reporting Information [Line Items]
Sales to Customers									$ 2,230	$ 1,901	1,893
% Change									17.30%	0.40%
Non-US | Abiomed | MedTech | Interventional Solutions
Segment Reporting Information [Line Items]
Sales to Customers									$ 240	$ 0	0
Non-US | Other Interventional Solutions | MedTech | Interventional Solutions
Segment Reporting Information [Line Items]
Sales to Customers									$ 247	$ 230	242
% Change									7.30%	(5.00%)
Non-US | HIPS | MedTech | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers									$ 564	$ 571	602
% Change									(1.20%)	(5.10%)
Non-US | KNEES | MedTech | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers									$ 559	$ 508	538
% Change									10.20%	(5.70%)
Non-US | TRAUMA | MedTech | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,030	$ 989	1,066
% Change									4.10%	(7.20%)
Non-US | SPINE,SPORTS & OTHER | MedTech | Orthopaedics
Segment Reporting Information [Line Items]
Sales to Customers									$ 1,263	$ 1,198	1,256
% Change									5.40%	(4.60%)
Non-US | ADVANCED | MedTech | Surgery
Segment Reporting Information [Line Items]
Sales to Customers									$ 2,837	$ 2,785	2,861
% Change									1.90%	(2.60%)
Non-US | GENERAL | MedTech | Surgery
Segment Reporting Information [Line Items]
Sales to Customers									$ 3,168	$ 3,008	3,085
% Change									5.30%	(2.50%)
Non-US | CONTACT LENSES/OTHER | MedTech | Vision
Segment Reporting Information [Line Items]
Sales to Customers									$ 2,076	$ 2,022	2,043
% Change									2.70%	(1.00%)
Non-US | SURGICAL | MedTech | Vision
Segment Reporting Information [Line Items]
Sales to Customers									$ 910	$ 837	788
% Change									8.60%	6.20%
UNITED STATES Exports | Remicade | Innovative Medicine | Immunology
Segment Reporting Information [Line Items]
Sales to Customers									$ 147	$ 204	$ 236
% Change									(28.00%)	(13.60%)