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DEBT AND FINANCING ARRANGEMENTS - Carrying Value of Debt Obligations (Detail) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2018 EUR (€) | Nov. 08, 2017 EUR (€) | Oct. 01, 2017
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 23,633,000,000 |  |  |  |
Long-term Debt | 22,349,000,000 |  |  |  |
Total debt | 22,736,000,000 | $ 24,289,000,000 |  |  |
Less current maturities | (2,805,000,000) | (4,011,000,000) |  |  |
Long-term debt, excluding current maturities | 19,931,000,000 | 20,278,000,000 |  |  |
Commercial paper |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 2,662,000,000 |  |  |  |
Maturity | Dec. 31, 2018 |  |  |  |
Total debt | $ 2,662,000,000 | $ 3,203,000,000 |  |  |
Senior notes | 1.125% senior notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 375,000,000 |  |  |  |
Debt instrument, stated interest rate percentage | 1.125% |  | 1.125% |  | 5.50%
Maturity - Maximum Date |  | Jan. 01, 2017 |  |  |
Senior notes | 5.50% senior notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 750,000,000 |  |  |  |
Debt instrument, stated interest rate percentage | 5.50% |  | 5.50% |  |
Maturity - Maximum Date | Jan. 01, 2018 |  |  |  |
Maturity | Dec. 31, 2018 |  |  |  |
Total debt | $ 0 | $ 751,000,000 |  |  |
Senior notes | 5.125% senior notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 1,000,000,000.0 |  |  |  |
Debt instrument, stated interest rate percentage | 5.125% |  | 5.125% |  |
Maturity - Maximum Date | Jan. 01, 2019 |  |  |  |
Maturity | Dec. 31, 2019 |  |  |  |
Total debt | $ 998,000,000 | 1,019,000,000 |  |  |
Senior notes | 3.125% senior notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 1,500,000,000 |  |  |  |
Debt instrument, stated interest rate percentage | 3.125% |  | 3.125% |  |
Maturity - Maximum Date | Jan. 01, 2021 |  |  |  |
Maturity | Dec. 31, 2021 |  |  |  |
Total debt | $ 1,492,000,000 | 1,549,000,000 |  |  |
Senior notes | 2.050% senior notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 700,000,000 |  |  |  |
Debt instrument, stated interest rate percentage | 2.05% |  | 2.05% |  |
Maturity | Apr. 30, 2021 |  |  |  |
Total debt | $ 698,000,000 | 696,000,000 |  |  |
Senior notes | 2.45% senior notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 1,000,000,000 |  |  |  |
Debt instrument, stated interest rate percentage | 2.45% |  | 2.45% |  |
Maturity - Maximum Date | Oct. 01, 2022 |  |  |  |
Total debt | $ 1,023,000,000 | 979,000,000 |  |  |
Senior notes | A235 Senior Notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 600,000,000 |  |  |  |
Debt instrument, stated interest rate percentage | 2.35% |  | 2.35% |  |
Maturity | May 31, 2022 |  |  |  |
Total debt | $ 597,000,000 | 597,000,000 |  |  |
Senior notes | 2.500% senior notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 1,000,000,000 |  |  |  |
Debt instrument, stated interest rate percentage | 2.50% |  | 2.50% |  |
Maturity | Apr. 30, 2023 |  |  |  |
Total debt | $ 994,000,000 | 992,000,000 |  |  |
Senior notes | 2.800% senior notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 500,000,000 |  |  |  |
Debt instrument, stated interest rate percentage | 2.80% |  | 2.80% |  |
Maturity | Nov. 30, 2024 |  |  |  |
Total debt | $ 496,000,000 | 495,000,000 |  |  |
Senior notes | 2.40% senior notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 500,000,000 |  |  |  |
Debt instrument, stated interest rate percentage | 2.40% |  | 2.40% |  |
Maturity | Dec. 31, 2026 |  |  |  |
Total debt | $ 498,000,000 | 497,000,000 |  |  |
Senior notes | 3.050% senior notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 1,000,000,000 |  |  |  |
Debt instrument, stated interest rate percentage | 3.05% |  | 3.05% |  |
Maturity | Nov. 30, 2027 |  |  |  |
Total debt | $ 991,000,000 | 990,000,000 |  |  |
Senior notes | 6.20% senior notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 1,500,000,000 |  |  |  |
Debt instrument, stated interest rate percentage | 6.20% |  | 6.20% |  |
Maturity | Dec. 31, 2038 |  |  |  |
Total debt | $ 1,482,000,000 | 1,482,000,000 |  |  |
Senior notes | 4.875% senior notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 500,000,000 |  |  |  |
Debt instrument, stated interest rate percentage | 4.875% |  | 4.875% |  |
Maturity | Dec. 31, 2040 |  |  |  |
Total debt | $ 490,000,000 | 489,000,000 |  |  |
Senior notes | 3.625% senior notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 375,000,000 |  |  |  |
Debt instrument, stated interest rate percentage | 3.625% |  | 3.625% |  |
Maturity | Dec. 31, 2042 |  |  |  |
Total debt | $ 368,000,000 | 368,000,000 |  |  |
Senior notes | 3.40% senior notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 500,000,000 |  |  |  |
Debt instrument, stated interest rate percentage | 3.40% |  | 3.40% |  |
Maturity | Dec. 31, 2046 |  |  |  |
Total debt | $ 491,000,000 | 491,000,000 |  |  |
Senior notes | 3.750% senior notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 1,150,000,000 |  |  |  |
Debt instrument, stated interest rate percentage | 3.75% |  | 3.75% |  |
Maturity | Nov. 30, 2047 |  |  |  |
Total debt | $ 1,136,000,000 | 1,135,000,000 |  |  |
Senior notes | Floating rate senior notes maturing 2021 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 350,000,000 |  |  |  |
Maturity | Apr. 30, 2021 |  |  |  |
Total debt | $ 349,000,000 | 348,000,000 |  |  |
Senior notes | Floating rate senior notes maturing 2022 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 400,000,000 |  |  |  |
Maturity | May 31, 2022 |  |  |  |
Total debt | $ 399,000,000 | 398,000,000 |  |  |
Senior notes | Floating rate senior notes maturing 2023 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 500,000,000 |  |  |  |
Maturity | Apr. 30, 2023 |  |  |  |
Total debt | $ 499,000,000 | 496,000,000 |  |  |
Senior notes | Floating rate senior notes maturing 2049-2067 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 1,042,000,000 |  |  |  |
Maturity - Minimum Date | Dec. 31, 2049 |  |  |  |
Maturity - Maximum Date | Dec. 31, 2067 |  |  |  |
Total debt | $ 1,029,000,000 | 1,032,000,000 |  |  |
Senior notes | 8.375% debentures Due 2020 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 424,000,000 |  |  |  |
Debt instrument, stated interest rate percentage | 8.375% |  | 8.375% |  |
Maturity | Dec. 31, 2020 |  |  |  |
Total debt | $ 419,000,000 | 447,000,000 |  |  |
Senior notes | 8.375% debentures Due 2030 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 276,000,000 |  |  |  |
Debt instrument, stated interest rate percentage | 8.375% |  | 8.375% |  |
Maturity | Dec. 31, 2030 |  |  |  |
Total debt | $ 274,000,000 | 282,000,000 |  |  |
Senior notes | Canadian Senior Note 2.125 Note [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 551,000,000 |  |  |  |
Debt instrument, stated interest rate percentage | 2.125% |  | 2.125% |  |
Maturity | Dec. 31, 2024 |  |  |  |
Total debt | $ 548,000,000 | 593,000,000 |  |  |
Pound Sterling notes | 5.50% Pound Sterling Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 84,000,000 |  |  |  |
Debt instrument, stated interest rate percentage | 5.50% |  | 5.50% |  |
Maturity | Dec. 31, 2031 |  |  |  |
Total debt | $ 84,000,000 | 84,000,000 |  |  |
Pound Sterling notes | Pound Sterling Notes 5 Point 13 Percent [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 577,000,000 |  |  |  |
Debt instrument, stated interest rate percentage | 5.125% |  | 5.125% |  |
Maturity | Dec. 31, 2050 |  |  |  |
Total debt | $ 546,000,000 | 586,000,000 |  |  |
Euro Senior Notes | 0.375% Euro Senior Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 803,000,000 |  |  | € 700,000,000 |
Debt instrument, stated interest rate percentage | 0.375% |  | 0.375% | 0.375% |
Maturity | Dec. 31, 2023 |  |  |  |
Total debt | $ 797,000,000 | 832,000,000 |  |  |
Euro Senior Notes | 1.625% euro senior notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 803,000,000 |  |  |  |
Debt instrument, stated interest rate percentage | 1.625% |  | 1.625% |  |
Maturity | Dec. 31, 2025 |  |  |  |
Total debt | $ 798,000,000 | 833,000,000 |  |  |
Euro Senior Notes | 1.000% euro senior notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 573,000,000 |  | € 500,000,000 |  |
Debt instrument, stated interest rate percentage | 1.00% |  | 1.00% |  |
Maturity | Nov. 30, 2028 |  |  |  |
Total debt | $ 570,000,000 | 595,000,000 |  |  |
Euro Senior Notes | 1.500% euro senior notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 573,000,000 |  |  | € 500,000,000 |
Debt instrument, stated interest rate percentage | 1.50% |  | 1.50% | 1.50% |
Maturity | Dec. 31, 2032 |  |  |  |
Total debt | $ 569,000,000 | 594,000,000 |  |  |
Euro Senior Notes | Floating Rate Euro Senior Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 573,000,000 |  |  |  |
Maturity | Dec. 31, 2020 |  |  |  |
Total debt | $ 572,000,000 | 598,000,000 |  |  |
Capital lease obligations |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 534,000,000 |  |  |  |
Maturity - Minimum Date | Dec. 31, 2018 |  |  |  |
Maturity - Maximum Date | Dec. 31, 3005 |  |  |  |
Total debt | $ 534,000,000 | 500,000,000 |  |  |
Facility notes and bonds |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 320,000,000 |  |  |  |
Maturity - Minimum Date | Dec. 31, 2029 |  |  |  |
Maturity - Maximum Date | Dec. 31, 2045 |  |  |  |
Total debt | $ 320,000,000 | 319,000,000 |  |  |
Other debt |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Principal Amount | $ 13,000,000 |  |  |  |
Maturity - Minimum Date | Dec. 31, 2018 |  |  |  |
Maturity - Maximum Date | Dec. 31, 2022 |  |  |  |
Total debt | $ 13,000,000 | $ 19,000,000 |  |  |

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