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Debt (Tables) | 12 Months Ended
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Dec. 31, 2018
Debt [Abstract] |
Long-term Debt |
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﻿ |  |  |  |  |
﻿ | December 31,
﻿ | 2018 |  | 2017
﻿ |  |  |  |  |
﻿Current portion of long-term debt | $ | 4 |  | $ | 379
﻿ |  |  |  |  |
﻿Long-term debt |  |  |  |  |
﻿Debentures, 1.5%, due 2018 |  |  |  | $ | 375
﻿Debentures, 6.625%, due 2019 |  |  |  |  | 245
﻿Debentures, 4.25%, due 2020 | $ | 291 |  |  | 288
﻿Debentures, 8.875%, due 2021 |  | 65 |  |  | 66
﻿Debentures, 2.90%, due 2022 |  | 373 |  |  | 373
﻿Debentures, 3.70%, due 2023 |  | 249 |  |  | 249
﻿Medium-term notes, average rate 7.66%, due through 2023 |  | 45 |  |  | 45
﻿Debentures, 7.00%, due 2024 |  | 100 |  |  | 99
﻿Yen-denominated Debentures, .698%, due 2024 |  | 191 |  |  | 185
﻿Yen-denominated Debentures, .722%, due 2025 |  | 90 |  |  |
﻿Yen-denominated Debentures, .992%, due 2027 |  | 426 |  |  | 414
﻿Yen-denominated Debentures, 1.043%, due 2028 |  | 276 |  |  |
﻿Debentures, 6.85%, due 2029 |  | 164 |  |  | 166
﻿Yen-Denominated Debentures, 1.219%, due 2030 |  | 226 |  |  |
﻿Debentures, callable, 7.25%, due 2036 |  | 248 |  |  | 248
﻿Debentures, 4.70%, due 2037 |  | 295 |  |  | 248
﻿Yen-denominated Debentures, 1.583%, due 2037 |  | 91 |  |  | 85
﻿Debentures, 5.75%, due 2040 |  | 395 |  |  | 397
﻿Debentures, 4.75%, due 2042 |  | 496 |  |  | 496
﻿Debentures, 5.35%, due 2048 |  | 543 |  |  |
﻿Debentures, 4.375%, due 2057 |  | 742 |  |  | 743
﻿Debentures, 5.85%, due 2068 |  | 296 |  |  |
﻿Other, average rate 5.08%, due through 2043 |  | 396 |  |  | 406
﻿Total long-term debt |  | 5,998 |  |  | 5,128
﻿Less current portion of long-term debt |  | 4 |  |  | 379
﻿Long-term debt | $ | 5,994 |  | $ | 4,749
﻿
Debt Maturities |
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﻿ | 2019 |  | 2020 |  | 2021 |  | 2022 |  | 2023 |  | Thereafter
﻿ | $ | 4 |  | $ | 305 |  | $ | 68 |  | $ | 381 |  | $ | 420 |  | $ | 4,856
﻿

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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
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- Definition Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
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