Borrowings and Lines of Credit (Long-Term Debt) (Details) - USD ($) $ in Millions |
3 Months Ended |
6 Months Ended |
|
Jun. 30, 2018 |
Jun. 30, 2018 |
Dec. 31, 2017 |
Debt Instrument [Line Items] |
|
|
|
|
Project financing obligations |
|
$ 206
|
$ 206
|
$ 158
|
Other (including capitalized leases) |
|
197
|
197
|
195
|
Total principal long-term debt |
|
27,361
|
27,361
|
27,118
|
Other (fair market value adjustments and discounts) |
|
(37)
|
(37)
|
(25)
|
Total long-term debt |
|
27,324
|
27,324
|
27,093
|
Less: current portion |
|
78
|
78
|
2,104
|
Long-term debt, net of current portion |
|
$ 27,246
|
$ 27,246
|
24,989
|
Notes 6.800% Due 2018 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
6.80%
|
6.80%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2018
|
|
Debt Instrument, Carrying Amount |
|
$ 0
|
$ 0
|
99
|
EURIBOR plus 0.800% floating rate notes due 2018 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Maturity Date, Description |
|
|
2018
|
|
Debt Instrument, Call Feature |
|
|
The three-month EURIBOR rate as of June 30, 2018 was approximately -0.321%. 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.
|
|
Debt Instrument, Carrying Amount |
[1] |
$ 0
|
$ 0
|
890
|
Debt Instrument, Interest Rate Terms |
|
EURIBOR plus 0.800% floating rate notes due 2018 (€750 million principal value) 2
|
|
|
Junior subordinated notes 1.778% due 2018 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
1.778%
|
1.778%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2018
|
|
Debt Instrument, Carrying Amount |
|
$ 0
|
$ 0
|
1,100
|
LIBOR plus 0.350% floating rate notes due 2019 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Maturity Date, Description |
|
|
2019
|
|
Debt Instrument, Call Feature |
|
|
The three-month LIBOR rate as of June 30, 2018 was approximately 2.336%.
|
|
Debt Instrument, Carrying Amount |
[2] |
$ 350
|
$ 350
|
350
|
Debt Instrument, Interest Rate Terms |
|
|
LIBOR plus 0.350% floating rate notes due 2019 3
|
|
Notes 1.500% notes 2019 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
1.50%
|
1.50%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2019
|
|
Debt Instrument, Call Feature |
|
|
We may redeem these notes at our option pursuant to their terms.
|
|
Debt Instrument, Carrying Amount |
[3] |
$ 650
|
$ 650
|
650
|
EURIBOR plus 0.15% floating rate notes due 2019 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
0.15%
|
0.15%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2019
|
|
Debt Instrument, Call Feature |
|
|
The three-month EURIBOR rate as of June 30, 2018 was approximately -0.321%. 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.
|
|
Debt Instrument, Carrying Amount |
[1] |
$ 876
|
$ 876
|
890
|
Debt Instrument, Interest Rate Terms |
|
EURIBOR plus 0.15% floating rate notes due 2019 (€750 million principal value) 2
|
|
|
Notes 8.875% Due 2019 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
8.875%
|
8.875%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2019
|
|
Debt Instrument, Carrying Amount |
|
$ 271
|
$ 271
|
271
|
Notes 4.875% Due 2020 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
4.875%
|
4.875%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2020
|
|
Debt Instrument, Call Feature |
|
|
We may redeem these notes at our option pursuant to their terms.
|
|
Debt Instrument, Carrying Amount |
[3] |
$ 171
|
$ 171
|
171
|
Notes 4.500% Due 2020 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
4.50%
|
4.50%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2020
|
|
Debt Instrument, Call Feature |
|
|
We may redeem these notes at our option pursuant to their terms.
|
|
Debt Instrument, Carrying Amount |
[3] |
$ 1,250
|
$ 1,250
|
1,250
|
Notes 1.900% Due 2020 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
1.90%
|
1.90%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2020
|
|
Debt Instrument, Call Feature |
|
|
We may redeem these notes at our option pursuant to their terms.
|
|
Debt Instrument, Carrying Amount |
[3] |
$ 1,000
|
$ 1,000
|
1,000
|
EURIBOR plus 0.20% floating rate notes due 2020 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Maturity Date, Description |
|
|
2020
|
|
Debt Instrument, Call Feature |
|
|
The three-month EURIBOR rate as of June 30, 2018 was approximately -0.321%. 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.
|
|
Debt Instrument, Carrying Amount |
[1] |
$ 876
|
$ 876
|
0
|
Debt Instrument, Interest Rate Terms |
|
EURIBOR plus 0.20% floating rate notes due 2020 (€750 million principal value) 2
|
|
|
Notes 8.750% Due 2021 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
8.75%
|
8.75%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2021
|
|
Debt Instrument, Carrying Amount |
|
$ 250
|
$ 250
|
250
|
Notes 1.950% Due 2021 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
1.95%
|
1.95%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2021
|
|
Debt Instrument, Call Feature |
|
|
We may redeem these notes at our option pursuant to their terms.
|
|
Debt Instrument, Carrying Amount |
[3] |
$ 750
|
$ 750
|
750
|
Note 1.125% Due 2021 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
1.125%
|
1.125%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2021
|
|
Debt Instrument, Call Feature |
|
|
We may redeem these notes at our option pursuant to their terms.
|
|
Debt Instrument, Carrying Amount |
[2] |
$ 1,110
|
$ 1,110
|
1,127
|
Notes 2.300% Due 2022 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
2.30%
|
2.30%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2022
|
|
Debt Instrument, Call Feature |
|
|
We may redeem these notes at our option pursuant to their terms.
|
|
Debt Instrument, Carrying Amount |
[3] |
$ 500
|
$ 500
|
500
|
Notes 3.100% Due 2022 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
3.10%
|
3.10%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2022
|
|
Debt Instrument, Call Feature |
|
|
We may redeem these notes at our option pursuant to their terms.
|
|
Debt Instrument, Carrying Amount |
[3] |
$ 2,300
|
$ 2,300
|
2,300
|
Notes 1.250% due 2023 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
1.25%
|
1.25%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2023
|
|
Debt Instrument, Call Feature |
|
|
We may redeem these notes at our option pursuant to their terms.
|
|
Debt Instrument, Carrying Amount |
[2] |
$ 876
|
$ 876
|
890
|
Notes 2.800% Due 2024 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
2.80%
|
2.80%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2024
|
|
Debt Instrument, Call Feature |
|
|
We may redeem these notes at our option pursuant to their terms.
|
|
Debt Instrument, Carrying Amount |
[3] |
$ 800
|
$ 800
|
800
|
Notes 1.150% Due 2024 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
1.15%
|
1.15%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2024
|
|
Debt Instrument, Call Feature |
|
|
We may redeem these notes at our option pursuant to their terms.
|
|
Debt Instrument, Carrying Amount |
[2] |
$ 876
|
$ 876
|
0
|
Notes 1.875% Due 2026 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
1.875%
|
1.875%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2026
|
|
Debt Instrument, Call Feature |
|
|
We may redeem these notes at our option pursuant to their terms.
|
|
Debt Instrument, Carrying Amount |
[3] |
$ 584
|
$ 584
|
593
|
Notes 2.650% Due 2026 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
2.65%
|
2.65%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2026
|
|
Debt Instrument, Call Feature |
|
|
We may redeem these notes at our option pursuant to their terms.
|
|
Debt Instrument, Carrying Amount |
[3] |
$ 1,150
|
$ 1,150
|
1,150
|
Notes 3.125% Due 2027 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
3.125%
|
3.125%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2027
|
|
Debt Instrument, Call Feature |
|
|
We may redeem these notes at our option pursuant to their terms.
|
|
Debt Instrument, Carrying Amount |
[3] |
$ 1,100
|
$ 1,100
|
1,100
|
Notes 7.100% Due 2027 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
7.10%
|
7.10%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2027
|
|
Debt Instrument, Carrying Amount |
|
$ 141
|
$ 141
|
141
|
Notes 6.700% Due 2028 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
6.70%
|
6.70%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2028
|
|
Debt Instrument, Carrying Amount |
|
$ 400
|
$ 400
|
400
|
Notes 7.500% Due 2029 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
7.50%
|
7.50%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2029
|
|
Debt Instrument, Call Feature |
|
|
We may redeem these notes at our option pursuant to their terms.
|
|
Debt Instrument, Carrying Amount |
[3] |
$ 550
|
$ 550
|
550
|
Notes 2.150% Due 2030 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
2.15%
|
2.15%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2030
|
|
Debt Instrument, Call Feature |
|
|
We may redeem these notes at our option pursuant to their terms.
|
|
Debt Instrument, Carrying Amount |
[3] |
$ 584
|
$ 584
|
0
|
Notes 5.400% Due 2035 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
5.40%
|
5.40%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2035
|
|
Debt Instrument, Call Feature |
|
|
We may redeem these notes at our option pursuant to their terms.
|
|
Debt Instrument, Carrying Amount |
[3] |
$ 600
|
$ 600
|
600
|
Notes 6.050% Due 2036 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
6.05%
|
6.05%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2036
|
|
Debt Instrument, Call Feature |
|
|
We may redeem these notes at our option pursuant to their terms.
|
|
Debt Instrument, Carrying Amount |
[3] |
$ 600
|
$ 600
|
600
|
Notes 6.800% Due 2036 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
6.80%
|
6.80%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2036
|
|
Debt Instrument, Call Feature |
|
|
We may redeem these notes at our option pursuant to their terms.
|
|
Debt Instrument, Carrying Amount |
[3] |
$ 134
|
$ 134
|
134
|
Notes 7.000% Due 2038 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
7.00%
|
7.00%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2038
|
|
Debt Instrument, Carrying Amount |
|
$ 159
|
$ 159
|
159
|
Notes 6.125% Due 2038 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
6.125%
|
6.125%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2038
|
|
Debt Instrument, Call Feature |
|
|
We may redeem these notes at our option pursuant to their terms.
|
|
Debt Instrument, Carrying Amount |
[3] |
$ 1,000
|
$ 1,000
|
1,000
|
Notes 5.700% Due 2040 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
5.70%
|
5.70%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2040
|
|
Debt Instrument, Call Feature |
|
|
We may redeem these notes at our option pursuant to their terms.
|
|
Debt Instrument, Carrying Amount |
[3] |
$ 1,000
|
$ 1,000
|
1,000
|
Notes 4.500% Due 2042 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
4.50%
|
4.50%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2042
|
|
Debt Instrument, Call Feature |
|
|
We may redeem these notes at our option pursuant to their terms.
|
|
Debt Instrument, Carrying Amount |
[3] |
$ 3,500
|
$ 3,500
|
3,500
|
Notes 4.150% Due 2045 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
4.15%
|
4.15%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2045
|
|
Debt Instrument, Call Feature |
|
|
We may redeem these notes at our option pursuant to their terms.
|
|
Debt Instrument, Carrying Amount |
[3] |
$ 850
|
$ 850
|
850
|
Notes 3.750% Due 2046 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
3.75%
|
3.75%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2046
|
|
Debt Instrument, Call Feature |
|
|
We may redeem these notes at our option pursuant to their terms.
|
|
Debt Instrument, Carrying Amount |
[3] |
$ 1,100
|
$ 1,100
|
1,100
|
Notes 4.050% Due 2047 [Member] |
|
|
|
|
Debt Instrument [Line Items] |
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
4.05%
|
4.05%
|
|
Debt Instrument, Maturity Date, Description |
|
|
2047
|
|
Debt Instrument, Call Feature |
|
|
We may redeem these notes at our option pursuant to their terms.
|
|
Debt Instrument, Carrying Amount |
[3] |
$ 600
|
$ 600
|
$ 600
|
|
|