Borrowings - Long-Term Debt, Components (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Borrowings
Long-term debt excluding finance lease obligations	$ 53,859	$ 61,718
Finance lease obligations	357	296
Long-term debt, gross	54,216	62,013
Less: net unamortized discount	849	875
Less: net unamortized debt issuance costs	136	156
Add: fair value adjustment	327	426
Total	53,558	61,408
Less: current maturities	6,632	7,053
Total long-term debt (excluding current portion)	$ 46,926	54,355
Finance lease obligations, interest rate (as a percent)	1.40%
U.S. dollars
Borrowings
Long-term debt, gross	$ 35,575	41,218
Euro
Borrowings
Long-term debt, gross	$ 16,222	18,355
Debt instrument, weighted-average interest rate (as a percent)	1.10%
Pound sterling
Borrowings
Long-term debt, gross	$ 405	411
Debt instrument, weighted-average interest rate (as a percent)	2.60%
Japanese yen
Borrowings
Long-term debt, gross	$ 1,304	1,409
Debt instrument, weighted-average interest rate (as a percent)	0.30%
Other
Borrowings
Long-term debt, gross	$ 354	324
Debt instrument, weighted-average interest rate (as a percent)	7.80%
Maturing 2021 \| U.S. dollars
Borrowings
Long-term debt, gross	$ 1,107	5,499
Debt instrument, weighted-average interest rate (as a percent)	0.70%
Maturing 2022 \| U.S. dollars
Borrowings
Long-term debt, gross	$ 5,682	6,233
Debt instrument, weighted-average interest rate (as a percent)	2.60%
Maturing 2023 \| U.S. dollars
Borrowings
Long-term debt, gross	$ 1,589	2,395
Debt instrument, weighted-average interest rate (as a percent)	3.40%
Maturing 2024 \| U.S. dollars
Borrowings
Long-term debt, gross	$ 5,018	5,029
Debt instrument, weighted-average interest rate (as a percent)	3.30%
Maturing 2025 \| U.S. dollars
Borrowings
Long-term debt, gross	$ 617	631
Debt instrument, weighted-average interest rate (as a percent)	6.90%
Maturing 2026 \| U.S. dollars
Borrowings
Long-term debt, gross	$ 4,498	4,370
Debt instrument, weighted-average interest rate (as a percent)	3.30%
Maturing 2027 \| U.S. dollars
Borrowings
Long-term debt, gross	$ 2,222	2,219
Debt instrument, weighted-average interest rate (as a percent)	3.00%
Maturing 2028 \| U.S. dollars
Borrowings
Long-term debt, gross	$ 313	313
Debt instrument, weighted-average interest rate (as a percent)	6.50%
Maturing 2029 \| U.S. dollars
Borrowings
Long-term debt, gross	$ 3,250	3,250
Debt instrument, weighted-average interest rate (as a percent)	3.50%
Maturing 2030 \| U.S. dollars
Borrowings
Long-term debt, gross	$ 1,350	1,350
Debt instrument, weighted-average interest rate (as a percent)	2.00%
Maturing 2032 \| U.S. dollars
Borrowings
Long-term debt, gross	$ 600	600
Debt instrument, weighted-average interest rate (as a percent)	5.90%
Maturing 2038 \| U.S. dollars
Borrowings
Long-term debt, gross	$ 83	83
Debt instrument, weighted-average interest rate (as a percent)	8.00%
Maturing 2039 \| U.S. dollars
Borrowings
Long-term debt, gross	$ 2,745	2,745
Debt instrument, weighted-average interest rate (as a percent)	4.50%
Maturing 2040 \| U.S. dollars
Borrowings
Long-term debt, gross	$ 650	650
Debt instrument, weighted-average interest rate (as a percent)	2.90%
Maturing 2042 \| U.S. dollars
Borrowings
Long-term debt, gross	$ 1,107	1,107
Debt instrument, weighted-average interest rate (as a percent)	4.00%
Maturing 2045 \| U.S. dollars
Borrowings
Long-term debt, gross	$ 27	27
Debt instrument, weighted-average interest rate (as a percent)	7.00%
Maturing 2046 \| U.S. dollars
Borrowings
Long-term debt, gross	$ 650	650
Debt instrument, weighted-average interest rate (as a percent)	4.70%
Maturing 2049 \| U.S. dollars
Borrowings
Long-term debt, gross	$ 3,000	3,000
Debt instrument, weighted-average interest rate (as a percent)	4.30%
Maturing 2050 \| U.S. dollars
Borrowings
Long-term debt, gross	$ 750	750
Debt instrument, weighted-average interest rate (as a percent)	3.00%
Maturing 2096 \| U.S. dollars
Borrowings
Long-term debt, gross	$ 316	$ 316
Debt instrument, weighted-average interest rate (as a percent)	7.10%

It represents the amount of debt excluding finance lease obligations.

No definition available.

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- Definition

Represents the weighted average interest rate on finance lease.

+ References

No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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- Definition

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.

+ References

No definition available.

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- Definition

Amount, after accumulated amortization, of debt discount.

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- Definition

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 as of the balance sheet date of the unamortized adjustment to the carrying value of an interest-bearing hedged item made under an effective interest rate fair value hedge that is amortized upon discontinuation of the interest rate fair value hedge.

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- Definition

Present value of lessee's discounted obligation for lease payments from finance lease.

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- Definition

Amount of long-term debt and lease obligation, classified as noncurrent.

+ References

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Amount of long-term debt and lease obligation, classified as current.

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Amount of long-term debt and lease obligation, including portion classified as current.

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- Definition

Weighted average interest rate of long-term debt outstanding calculated at point in time.

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No definition available.

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