Debt Outstanding Debt (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Total Borrowings at Par Value	$ 18,320	$ 19,186
Fair Value Hedge Accounting Adjustments	(68)	(93)
Unamortized Discount, Net	(26)	(21)
Unamortized Debt Issuance Costs	(78)	(82)
Total Borrowings at Carrying Value	18,148	18,990
Less: Short-term Obligations and Current Maturities	1,336	1,271
Long-term Obligations	16,812	17,719
Commercial Paper Programs [Member]
Debt Instrument [Line Items]
Total Borrowings at Par Value		693
Total Borrowings at Carrying Value		693
Senior Notes [Member]
Debt Instrument [Line Items]
Total Borrowings at Carrying Value	$ 18,129	18,276
Debt Instrument, Call Feature	Each of the notes may be redeemed at a redemption price of 100% of the principal amount plus a specified make-whole premium and accrued interest.
Senior Notes [Member] \| Floating Rate 2-Year Senior Notes, Due 7/24/2019 (euro-denominated) [Member]
Debt Instrument [Line Items]
Debt Instrument, Term	2 years
Debt Instrument, Maturity Date	Jul. 24, 2019
Effective Interest Rate	0.10%
Total Borrowings at Par Value	$ 561	574
Senior Notes [Member] \| 6.00% 10-Year Senior Notes, Due 3/1/2020 [Member]
Debt Instrument [Line Items]
Stated Interest Rate	6.00%
Debt Instrument, Term	10 years
Debt Instrument, Maturity Date	Mar. 01, 2020
Effective Interest Rate	2.97%
Total Borrowings at Par Value	$ 750	750
Senior Notes [Member] \| 4.70% 10-Year Senior Notes, Due 5/1/2020 [Member]
Debt Instrument [Line Items]
Stated Interest Rate	4.70%
Debt Instrument, Term	10 years
Debt Instrument, Maturity Date	May 01, 2020
Effective Interest Rate	4.23%
Total Borrowings at Par Value	$ 300	300
Senior Notes [Member] \| Floating Rate 2-Year Senior Notes, Due 8/7/2020 (euro-denominated) [Member]
Debt Instrument [Line Items]
Debt Instrument, Term	2 years
Debt Instrument, Maturity Date	Aug. 07, 2020
Effective Interest Rate	0.17%
Total Borrowings at Par Value	$ 673	688
Senior Notes [Member] \| 1.50% 5-Year Senior Notes, Due 12/1/2020 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	1.50%
Debt Instrument, Term	5 years
Debt Instrument, Maturity Date	Dec. 01, 2020
Effective Interest Rate	1.62%
Total Borrowings at Par Value	$ 477	487
Senior Notes [Member] \| 5.00% 10-Year Senior Notes, Due 1/15/2021 [Member]
Debt Instrument [Line Items]
Stated Interest Rate	5.00%
Debt Instrument, Term	10 years
Debt Instrument, Maturity Date	Jan. 15, 2021
Effective Interest Rate	3.24%
Total Borrowings at Par Value	$ 400	400
Senior Notes [Member] \| 4.50% 10-Year Senior Notes, Due 3/1/2021 [Member]
Debt Instrument [Line Items]
Stated Interest Rate	4.50%
Debt Instrument, Term	10 years
Debt Instrument, Maturity Date	Mar. 01, 2021
Effective Interest Rate	6.78%
Total Borrowings at Par Value	$ 1,000	1,000
Senior Notes [Member] \| 3.60% 10-Year Senior Notes, Due 8/15/2021 [Member]
Debt Instrument [Line Items]
Stated Interest Rate	3.60%
Debt Instrument, Term	10 years
Debt Instrument, Maturity Date	Aug. 15, 2021
Effective Interest Rate	6.42%
Total Borrowings at Par Value	$ 1,100	1,100
Senior Notes [Member] \| 3.30% 7-Year Senior Notes, Due 2/15/2022 [Member]
Debt Instrument [Line Items]
Stated Interest Rate	3.30%
Debt Instrument, Term	7 years
Debt Instrument, Maturity Date	Feb. 15, 2022
Effective Interest Rate	3.42%
Total Borrowings at Par Value	$ 800	800
Senior Notes [Member] \| 2.15% 7-Year Senior Notes, Due 7/21/2022 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	2.15%
Debt Instrument, Term	7 years
Debt Instrument, Maturity Date	Jul. 21, 2022
Effective Interest Rate	2.28%
Total Borrowings at Par Value	$ 561	574
Senior Notes [Member] \| 3.15% 10-Year Senior Notes, Due 1/15/2023 [Member]
Debt Instrument [Line Items]
Stated Interest Rate	3.15%
Debt Instrument, Term	10 years
Debt Instrument, Maturity Date	Jan. 15, 2023
Effective Interest Rate	3.30%
Total Borrowings at Par Value	$ 800	800
Senior Notes [Member] \| 3.00% 7-Year Senior Notes, Due 4/15/2023 [Member]
Debt Instrument [Line Items]
Stated Interest Rate	3.00%
Debt Instrument, Term	7 years
Debt Instrument, Maturity Date	Apr. 15, 2023
Effective Interest Rate	6.63%
Total Borrowings at Par Value	$ 1,000	1,000
Senior Notes [Member] \| 4.15% 10-Year Senior Notes, Due 2/1/2024 [Member]
Debt Instrument [Line Items]
Stated Interest Rate	4.15%
Debt Instrument, Term	10 years
Debt Instrument, Maturity Date	Feb. 01, 2024
Effective Interest Rate	4.16%
Total Borrowings at Par Value	$ 1,000	1,000
Senior Notes [Member] \| 0.75% 8-Year Senior Notes, Due 9/12/2024 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	0.75%
Debt Instrument, Term	8 years
Debt Instrument, Maturity Date	Sep. 12, 2024
Effective Interest Rate	0.94%
Total Borrowings at Par Value	$ 1,122	1,147
Senior Notes [Member] \| 2.00% 10-Year Senior Notes, Due 4/15/2025 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	2.00%
Debt Instrument, Term	10 years
Debt Instrument, Maturity Date	Apr. 15, 2025
Effective Interest Rate	2.09%
Total Borrowings at Par Value	$ 718	734
Senior Notes [Member] \| 3.65% 10-Year Senior Notes, Due 12/15/2025 [Member]
Debt Instrument [Line Items]
Stated Interest Rate	3.65%
Debt Instrument, Term	10 years
Debt Instrument, Maturity Date	Dec. 15, 2025
Effective Interest Rate	3.77%
Total Borrowings at Par Value	$ 350	350
Senior Notes [Member] \| 1.40% 8.5-Year Senior Notes, Due 1/23/2026 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	1.40%
Debt Instrument, Term	8 years 6 months
Debt Instrument, Maturity Date	Jan. 23, 2026
Effective Interest Rate	1.53%
Total Borrowings at Par Value	$ 785	802
Senior Notes [Member] \| 2.95% 10-Year Senior Notes, Due 9/19/2026 [Member]
Debt Instrument [Line Items]
Stated Interest Rate	2.95%
Debt Instrument, Term	10 years
Debt Instrument, Maturity Date	Sep. 19, 2026
Effective Interest Rate	3.19%
Total Borrowings at Par Value	$ 1,200	1,200
Senior Notes [Member] \| 1.45% 10-Year Senior Notes, Due 3/16/2027 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	1.45%
Debt Instrument, Term	10 years
Debt Instrument, Maturity Date	Mar. 16, 2027
Effective Interest Rate	1.65%
Total Borrowings at Par Value	$ 561	574
Senior Notes [Member] \| 3.20% 10-Year Senior Notes, Due 8/15/2027 [Member]
Debt Instrument [Line Items]
Stated Interest Rate	3.20%
Debt Instrument, Term	10 years
Debt Instrument, Maturity Date	Aug. 15, 2027
Effective Interest Rate	3.39%
Total Borrowings at Par Value	$ 750	750
Senior Notes [Member] \| 1.375% 12-Year Senior Notes, Due 9/12/2028 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	1.375%
Debt Instrument, Term	12 years
Debt Instrument, Maturity Date	Sep. 12, 2028
Effective Interest Rate	1.46%
Total Borrowings at Par Value	$ 673	688
Senior Notes [Member] \| 1.95% 12-Year Senior Notes, Due 7/24/2029 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	1.95%
Debt Instrument, Term	12 years
Debt Instrument, Maturity Date	Jul. 24, 2029
Effective Interest Rate	2.08%
Total Borrowings at Par Value	$ 785	802
Senior Notes [Member] \| 2.875% 20-Year Senior Notes, Due 7/24/2037 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	2.875%
Debt Instrument, Term	20 years
Debt Instrument, Maturity Date	Jul. 24, 2037
Effective Interest Rate	2.94%
Total Borrowings at Par Value	$ 785	802
Senior Notes [Member] \| 5.30% 30-Year Senior Notes, Due 2/1/2044 [Member]
Debt Instrument [Line Items]
Stated Interest Rate	5.30%
Debt Instrument, Term	30 years
Debt Instrument, Maturity Date	Feb. 01, 2044
Effective Interest Rate	5.37%
Total Borrowings at Par Value	$ 400	400
Senior Notes [Member] \| 4.10% 30-Year Senior Notes, Due 8/15/2047 [Member]
Debt Instrument [Line Items]
Stated Interest Rate	4.10%
Debt Instrument, Term	30 years
Debt Instrument, Maturity Date	Aug. 15, 2047
Effective Interest Rate	4.23%
Total Borrowings at Par Value	$ 750	750
Other Debt [Member]
Debt Instrument [Line Items]
Total Borrowings at Par Value	19	21
Total Borrowings at Carrying Value	$ 19	$ 21

Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount, after accumulated amortization, of debt discount (premium).

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount of cumulative increase (decrease) in fair value of hedged liability in fair value hedge, attributable to hedged risk.

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