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Borrowings and Lines of Credit (Long-Term Debt) (Details) € in Millions, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 USD ($) | Dec. 31, 2019 EUR (€) | Dec. 31, 2018 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |
Proceeds from Issuance of Debt |  |  |  |  | $ 11,000 |
Total principal long-term debt |  | $ 41,274 |  |  | 44,111 |
Other debt (including capitalized leases) |  | 315 |  |  | 269 |
Other (fair market value adjustments, discounts and debt issuance costs) |  | (315) |  |  | (348) |
Total long-term debt |  | 40,959 |  |  | 43,763 |
Less: current portion |  | 3,258 |  |  | 2,722 |
Long-term debt, net of current portion |  | 37,701 |  |  | 41,041 |
Long Term Debt Maturities Repayments Of Principal In Next Twelve Months |  | 3,258 |  |  |  |
Long Term Debt Maturities Repayments Of Principal In Year Two |  | 4,091 |  |  |  |
Long Term Debt Maturities Repayments Of Principal In Year Three |  | 3,904 |  |  |  |
Long Term Debt Maturities Repayments Of Principal In Year Four |  | 3,490 |  |  |  |
Long Term Debt Maturities Repayments Of Principal In Year Five |  | 2,592 |  |  |  |
Long Term Debt Maturities Repayments Of Principal After Year Five |  | 23,939 |  |  |  |
LIBOR plus 0.350% floating rate notes due 2019 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [1] | $ 0 |  |  | 350 |
Debt Instrument, Interest Rate, Stated Percentage |  | 0.35% |  |  |  |
Debt Instrument, Maturity Year Date |  | Libor plus 0.350% floating rate notes due 2019 (3) |  | Libor plus 0.350% floating rate notes due 2019 (3) |  |
Notes 1.500% Due 2019 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 0 |  |  | 650 |
Debt Instrument, Interest Rate, Stated Percentage |  | 1.50% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2019 |  | 2019 |  |
Notes 1.950% Due 2019 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [3] | $ 0 |  |  | 300 |
Debt Instrument, Interest Rate, Stated Percentage |  | 1.95% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2019 |  | 2019 |  |
EURIBOR plus 0.15% floating rate notes due 2019 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [4] | $ 0 |  |  | 858 |
Debt Instrument, Interest Rate, Stated Percentage |  | 0.15% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2019 |  | 2019 |  |
Repayment of Debt, Date |  | Nov. 13, 2019 |  | Nov. 13, 2019 |  |
Notes 5.250% Due 2019 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [3] | $ 0 |  |  | 300 |
Debt Instrument, Interest Rate, Stated Percentage |  | 5.25% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2019 |  | 2019 |  |
Notes 8.875% Due 2019 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount |  | $ 0 |  |  | 271 |
Debt Instrument, Interest Rate, Stated Percentage |  | 8.875% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2019 |  | 2019 |  |
Repayment of Debt, Date |  | Nov. 15, 2019 |  | Nov. 15, 2019 |  |
Notes 4.875% Due 2020 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 171 |  |  | 171 |
Debt Instrument, Interest Rate, Stated Percentage |  | 4.875% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2020 |  | 2020 |  |
Notes 4.500% Due 2020 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 1,250 |  |  | 1,250 |
Debt Instrument, Interest Rate, Stated Percentage |  | 4.50% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2020 |  | 2020 |  |
Notes 1.900% Due 2020 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 1,000 |  |  | 1,000 |
Debt Instrument, Interest Rate, Stated Percentage |  | 1.90% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2020 |  | 2020 |  |
EURIBOR plus 0.20% floating rate notes due 2020 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Proceeds from Issuance of Debt | € | [5] |  |  | € 750 |  |
Debt Instrument, Carrying Amount | [4] | $ 831 |  |  | 858 |
Debt Instrument, Interest Rate, Stated Percentage |  | 0.20% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2020 |  | 2020 |  |
Notes 8.750% Due 2021 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount |  | $ 250 |  |  | 250 |
Debt Instrument, Interest Rate, Stated Percentage |  | 8.75% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2021 |  | 2021 |  |
Notes 3.100% Due 2021 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [3] | $ 250 |  |  | 250 |
Debt Instrument, Interest Rate, Stated Percentage |  | 3.10% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2021 |  | 2021 |  |
Notes 3.350% due 2021 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Proceeds from Issuance of Debt | [6] | $ 1,000 |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 1,000 |  |  | 1,000 |
Debt Instrument, Interest Rate, Stated Percentage |  | 3.35% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2021 |  | 2021 |  |
LIBOR plus 0.650% floating rate notes due 2021 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Proceeds from Issuance of Debt | [6] | $ 750 |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 750 | [1] |  | 750 | [7]
Debt Instrument, Interest Rate, Stated Percentage |  | 0.65% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2021 |  | 2021 |  |
Notes 1.950% Due 2021 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 750 |  |  | 750 |
Debt Instrument, Interest Rate, Stated Percentage |  | 1.95% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2021 |  | 2021 |  |
Notes 1.125% Due 2021 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 1,053 |  |  | 1,088 |
Debt Instrument, Interest Rate, Stated Percentage |  | 1.125% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2021 |  | 2021 |  |
Notes 2.300% Due 2022 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 500 |  |  | 500 |
Debt Instrument, Interest Rate, Stated Percentage |  | 2.30% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2022 |  | 2022 |  |
Notes 2.800% Due 2022 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [3] | $ 1,100 |  |  | 1,100 |
Debt Instrument, Interest Rate, Stated Percentage |  | 2.80% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2022 |  | 2022 |  |
Notes 3.100% Due 2022 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 2,300 |  |  | 2,300 |
Debt Instrument, Interest Rate, Stated Percentage |  | 3.10% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2022 |  | 2022 |  |
Notes 1.250% due 2023 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 831 |  |  | 858 |
Debt Instrument, Interest Rate, Stated Percentage |  | 1.25% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2023 |  | 2023 |  |
Notes 3.650% Due 2023 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Proceeds from Issuance of Debt | [6] | $ 2,250 |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 2,250 |  |  | 2,250 |
Debt Instrument, Interest Rate, Stated Percentage |  | 3.65% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2023 |  | 2023 |  |
Notes 3.700% Due 2023 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [3] | $ 400 |  |  | 400 |
Debt Instrument, Interest Rate, Stated Percentage |  | 3.70% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2023 |  | 2023 |  |
Notes 2.800% Due 2024 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 800 |  |  | 800 |
Debt Instrument, Interest Rate, Stated Percentage |  | 2.80% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2024 |  | 2024 |  |
Notes 3.200% Due 2024 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount |  | $ 950 | [3] |  | 950 |
Debt Instrument, Interest Rate, Stated Percentage |  | 3.20% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2024 |  | 2024 |  |
Notes 1.150% Due 2024 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Proceeds from Issuance of Debt | € | [5] |  |  | € 750 |  |
Debt Instrument, Carrying Amount | [2] | $ 831 |  |  | 858 |
Debt Instrument, Interest Rate, Stated Percentage |  | 1.15% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2024 |  | 2024 |  |
Notes 3.950% Due 2025 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Proceeds from Issuance of Debt | [6] | $ 1,500 |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 1,500 |  |  | 1,500 |
Debt Instrument, Interest Rate, Stated Percentage |  | 3.95% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2025 |  | 2025 |  |
Notes 1.875% Due 2026 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 554 |  |  | 573 |
Debt Instrument, Interest Rate, Stated Percentage |  | 1.875% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2026 |  | 2026 |  |
Notes 2.650% Due 2026 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 1,150 |  |  | 1,150 |
Debt Instrument, Interest Rate, Stated Percentage |  | 2.65% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2026 |  | 2026 |  |
Notes 3.125% Due 2027 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 1,100 |  |  | 1,100 |
Debt Instrument, Interest Rate, Stated Percentage |  | 3.125% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2027 |  | 2027 |  |
Notes 3.500% Due 2027 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [3] | $ 1,300 |  |  | 1,300 |
Debt Instrument, Interest Rate, Stated Percentage |  | 3.50% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2027 |  | 2027 |  |
Notes 7.100% Due 2027 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount |  | $ 141 |  |  | 141 |
Debt Instrument, Interest Rate, Stated Percentage |  | 7.10% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2027 |  | 2027 |  |
Notes 6.700% Due 2028 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount |  | $ 400 |  |  | 400 |
Debt Instrument, Interest Rate, Stated Percentage |  | 6.70% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2028 |  | 2028 |  |
Notes 4.125% Due 2028 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Proceeds from Issuance of Debt | [6] | $ 3,000 |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 3,000 |  |  | 3,000 |
Debt Instrument, Interest Rate, Stated Percentage |  | 4.125% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2028 |  | 2028 |  |
Notes 7.500% Due 2029 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 550 |  |  | 550 |
Debt Instrument, Interest Rate, Stated Percentage |  | 7.50% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2029 |  | 2029 |  |
Notes 2.150% Due 2030 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Proceeds from Issuance of Debt | € | [5] |  |  | € 500 |  |
Debt Instrument, Carrying Amount | [2] | $ 554 |  |  | 573 |
Debt Instrument, Interest Rate, Stated Percentage |  | 2.15% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2030 |  | 2030 |  |
Notes 5.400% Due 2035 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 600 |  |  | 600 |
Debt Instrument, Interest Rate, Stated Percentage |  | 5.40% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2035 |  | 2035 |  |
Notes 6.050% Due 2036 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 600 |  |  | 600 |
Debt Instrument, Interest Rate, Stated Percentage |  | 6.05% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2036 |  | 2036 |  |
Notes 6.800% Due 2036 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 134 |  |  | 134 |
Debt Instrument, Interest Rate, Stated Percentage |  | 6.80% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2036 |  | 2036 |  |
Notes 7.000% Due 2038 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount |  | $ 159 |  |  | 159 |
Debt Instrument, Interest Rate, Stated Percentage |  | 7.00% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2038 |  | 2038 |  |
Notes 6.125% Due 2038 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 1,000 |  |  | 1,000 |
Debt Instrument, Interest Rate, Stated Percentage |  | 6.125% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2038 |  | 2038 |  |
Notes 4.450% Due 2038 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Proceeds from Issuance of Debt | [6] | $ 750 |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 750 |  |  | 750 |
Debt Instrument, Interest Rate, Stated Percentage |  | 4.45% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2038 |  | 2038 |  |
Notes 5.700% Due 2040 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 1,000 |  |  | 1,000 |
Debt Instrument, Interest Rate, Stated Percentage |  | 5.70% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2040 |  | 2040 |  |
Notes 4.500% Due 2042 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 3,500 |  |  | 3,500 |
Debt Instrument, Interest Rate, Stated Percentage |  | 4.50% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2042 |  | 2042 |  |
Notes 4.800% Due 2043 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [3] | $ 400 |  |  | 400 |
Debt Instrument, Interest Rate, Stated Percentage |  | 4.80% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2043 |  | 2043 |  |
Notes 4.150% Due 2045 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 850 |  |  | 850 |
Debt Instrument, Interest Rate, Stated Percentage |  | 4.15% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2045 |  | 2045 |  |
Notes 3.750% Due 2046 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 1,100 |  |  | 1,100 |
Debt Instrument, Interest Rate, Stated Percentage |  | 3.75% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2046 |  | 2046 |  |
Notes 4.050% Due 2047 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 600 |  |  | 600 |
Debt Instrument, Interest Rate, Stated Percentage |  | 4.05% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2047 |  | 2047 |  |
Notes 4.350% Due 2047 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt Instrument, Carrying Amount | [3] | $ 1,000 |  |  | 1,000 |
Debt Instrument, Interest Rate, Stated Percentage |  | 4.35% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2047 |  | 2047 |  |
Notes 4.625% Due 2048 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Proceeds from Issuance of Debt | [8] | $ 1,750 |  |  |  |
Debt Instrument, Carrying Amount | [2] | $ 1,750 |  |  | $ 1,750 |
Debt Instrument, Interest Rate, Stated Percentage |  | 4.625% |  |  |  |
Debt Instrument, Maturity Year Date |  | 2048 |  | 2048 |  |
[1] | The three-month LIBOR rate as of December 31, 2019 was approximately 1.908%.
[2] | We may redeem these notes at our option pursuant to their terms.
[3] | Rockwell Collins debt which remained outstanding following the Rockwell Acquisition.
[4] | The three-month EURIBOR rate as of December 31, 2019 was approximately (0.383)%. The notes may be redeemed at our option in whole, but not in part, at any time in the event of certain developments affecting U.S. taxation.
[5] | (3) The net proceeds received from these debt issuances were used for general corporate purposes.
[6] | (1) The net proceeds received from these debt issuances were used to partially finance the cash consideration portion of the purchase price for Rockwell Collins and fees, expenses and other amounts related to the acquisition of Rockwell Collins.
[7] | The three-month LIBOR rate as of December 31, 2019 was approximately 1.908%.
[8] | (2) The net proceeds from these debt issuances were used to fund the repayment of commercial paper and for other general corporate purposes.

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