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FINANCIAL INSTRUMENTS - Scheduled Debt Repayments (Details) - USD ($) | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | May 02, 2013 | Apr. 03, 2012 | Sep. 30, 2008
--- | --- | --- | --- | --- | --- | ---
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | $ 6,423,000,000 | $ 7,931,000,000 | $ 9,968,000,000 |  |  |
Minimum annual payments under capital leases | 46,000,000 |  |  |  |  |
Other debt obligations |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 603,000,000 | 609,000,000 | 654,000,000 |  |  |
Acacia credit facility |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 71,000,000 | $ 99,000,000 | $ 128,000,000 |  |  |
2018 |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Minimum annual payments under capital leases | 27,000,000 |  |  |  |  |
2019 |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Minimum annual payments under capital leases | 11,000,000 |  |  |  |  |
2020 |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Minimum annual payments under capital leases | 4,000,000 |  |  |  |  |
2021 |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Minimum annual payments under capital leases | 1,000,000 |  |  |  |  |
2022 |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Minimum annual payments under capital leases | 1,000,000 |  |  |  |  |
2023 and thereafter |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Minimum annual payments under capital leases | 2,000,000 |  |  |  |  |
Gross amount |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 6,410,000,000 |  |  |  |  |
Gross amount | 4.95% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 248,000,000 |  |  |  |  |
Gross amount | 7.31% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 7,000,000 |  |  |  |  |
Gross amount | 4.40% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 629,000,000 |  |  |  |  |
Gross amount | 3.85% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 337,000,000 |  |  |  | $ 1,250,000,000.00 |
Gross amount | 7.73% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 7,000,000 |  |  |  |  |
Gross amount | 7.70% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 5,000,000 |  |  |  |  |
Gross amount | 7.37% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 32,000,000 |  |  |  |  |
Gross amount | 8.05% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 15,000,000 |  |  |  |  |
Gross amount | 6.38% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 200,000,000 |  |  |  |  |
Gross amount | 5.80% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 200,000,000 |  |  |  |  |
Gross amount | 5.80% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 200,000,000 |  |  |  |  |
Gross amount | 6.45% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 300,000,000 |  |  |  |  |
Gross amount | 6.35% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 600,000,000 |  |  |  |  |
Gross amount | 7.50% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 250,000,000 |  |  |  |  | $ 250,000,000
Gross amount | 5.95% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 850,000,000 |  |  |  |  |
Gross amount | 5.70% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 850,000,000 |  |  |  |  |
Gross amount | 5.25% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 750,000,000 |  |  |  | $ 750,000,000 |
Gross amount | 5.75% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 850,000,000 |  |  | $ 850,000,000 |  |
Gross amount | Other debt obligations |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 9,000,000 |  |  |  |  |
Gross amount | Acacia credit facility |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 71,000,000 |  |  |  |  |
Gross amount | 2018 |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 32,000,000 |  |  |  |  |
Gross amount | 2018 | 4.95% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2018 | 7.31% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2018 | 4.40% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2018 | 3.85% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2018 | 7.73% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2018 | 7.70% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2018 | 7.37% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2018 | 8.05% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2018 | 6.38% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2018 | 5.80% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2018 | 5.80% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2018 | 6.45% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2018 | 6.35% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2018 | 7.50% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2018 | 5.95% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2018 | 5.70% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2018 | 5.25% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2018 | 5.75% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2018 | Other debt obligations |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 4,000,000 |  |  |  |  |
Gross amount | 2018 | Acacia credit facility |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 28,000,000 |  |  |  |  |
Gross amount | 2019 |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 33,000,000 |  |  |  |  |
Gross amount | 2019 | 4.95% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2019 | 7.31% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2019 | 4.40% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2019 | 3.85% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2019 | 7.73% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2019 | 7.70% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2019 | 7.37% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2019 | 8.05% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2019 | 6.38% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2019 | 5.80% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2019 | 5.80% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2019 | 6.45% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2019 | 6.35% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2019 | 7.50% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2019 | 5.95% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2019 | 5.70% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2019 | 5.25% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2019 | 5.75% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2019 | Other debt obligations |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 5,000,000 |  |  |  |  |
Gross amount | 2019 | Acacia credit facility |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 28,000,000 |  |  |  |  |
Gross amount | 2020 |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 263,000,000 |  |  |  |  |
Gross amount | 2020 | 4.95% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 248,000,000 |  |  |  |  |
Gross amount | 2020 | 7.31% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2020 | 4.40% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2020 | 3.85% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2020 | 7.73% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2020 | 7.70% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2020 | 7.37% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2020 | 8.05% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2020 | 6.38% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2020 | 5.80% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2020 | 5.80% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2020 | 6.45% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2020 | 6.35% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2020 | 7.50% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2020 | 5.95% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2020 | 5.70% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2020 | 5.25% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2020 | 5.75% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2020 | Other debt obligations |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2020 | Acacia credit facility |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 15,000,000 |  |  |  |  |
Gross amount | 2021 |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 636,000,000 |  |  |  |  |
Gross amount | 2021 | 4.95% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2021 | 7.31% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 7,000,000 |  |  |  |  |
Gross amount | 2021 | 4.40% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 629,000,000 |  |  |  |  |
Gross amount | 2021 | 3.85% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2021 | 7.73% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2021 | 7.70% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2021 | 7.37% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2021 | 8.05% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2021 | 6.38% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2021 | 5.80% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2021 | 5.80% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2021 | 6.45% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2021 | 6.35% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2021 | 7.50% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2021 | 5.95% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2021 | 5.70% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2021 | 5.25% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2021 | 5.75% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2021 | Other debt obligations |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2021 | Acacia credit facility |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2022 |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 337,000,000 |  |  |  |  |
Gross amount | 2022 | 4.95% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2022 | 7.31% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2022 | 4.40% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2022 | 3.85% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 337,000,000 |  |  |  |  |
Gross amount | 2022 | 7.73% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2022 | 7.70% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2022 | 7.37% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2022 | 8.05% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2022 | 6.38% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2022 | 5.80% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2022 | 5.80% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2022 | 6.45% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2022 | 6.35% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2022 | 7.50% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2022 | 5.95% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2022 | 5.70% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2022 | 5.25% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2022 | 5.75% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2022 | Other debt obligations |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2022 | Acacia credit facility |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2023 and thereafter |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 5,109,000,000 |  |  |  |  |
Gross amount | 2023 and thereafter | 4.95% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2023 and thereafter | 7.31% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2023 and thereafter | 4.40% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2023 and thereafter | 3.85% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2023 and thereafter | 7.73% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 7,000,000 |  |  |  |  |
Gross amount | 2023 and thereafter | 7.70% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 5,000,000 |  |  |  |  |
Gross amount | 2023 and thereafter | 7.37% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 32,000,000 |  |  |  |  |
Gross amount | 2023 and thereafter | 8.05% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 15,000,000 |  |  |  |  |
Gross amount | 2023 and thereafter | 6.38% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 200,000,000 |  |  |  |  |
Gross amount | 2023 and thereafter | 5.80% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 200,000,000 |  |  |  |  |
Gross amount | 2023 and thereafter | 5.80% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 200,000,000 |  |  |  |  |
Gross amount | 2023 and thereafter | 6.45% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 300,000,000 |  |  |  |  |
Gross amount | 2023 and thereafter | 6.35% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 600,000,000 |  |  |  |  |
Gross amount | 2023 and thereafter | 7.50% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 250,000,000 |  |  |  |  |
Gross amount | 2023 and thereafter | 5.95% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 850,000,000 |  |  |  |  |
Gross amount | 2023 and thereafter | 5.70% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 850,000,000 |  |  |  |  |
Gross amount | 2023 and thereafter | 5.25% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 750,000,000 |  |  |  |  |
Gross amount | 2023 and thereafter | 5.75% notes |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 850,000,000 |  |  |  |  |
Gross amount | 2023 and thereafter | Other debt obligations |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | 0 |  |  |  |  |
Gross amount | 2023 and thereafter | Acacia credit facility |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |
Borrowings | $ 0 |  |  |  |  |

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