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v3.19.1

Debt - Recourse Debt (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Debt Instrument [Line Items] |  |
Gain (loss) on extinguishment of debt | $ (10) | $ (170)
7.375% Senior Notes Due 2021 [Member] [Member] |  |
Debt Instrument [Line Items] |  |
Redeemed notes |  | 690
5.5% Senior Notes Due 2024 [Member] [Member] |  |
Debt Instrument [Line Items] |  |
Redeemed notes |  | 671
5.5% Senior Notes Due 2025 [Member] [Member] |  |
Debt Instrument [Line Items] |  |
Redeemed notes |  | 29
8.0% Senior Notes Due 2020 [Domain] |  |
Debt Instrument [Line Items] |  |
Redeemed notes |  | 228
Senior Notes [Member] | 4.0% Senior Notes Due 2021 [Domain] [Domain] |  |
Debt Instrument [Line Items] |  |
Issued senior notes |  | 500
Senior Notes [Member] | 4.5% Senior Notes Due 2023 [Domain] [Domain] |  |
Debt Instrument [Line Items] |  |
Issued senior notes |  | $ 500
Senior Notes [Member] | 5.5% Senior Notes Due 2024 [Member] [Member] |  |
Debt Instrument [Line Items] |  |
Interest rate on senior notes |  | 5.50%
Senior Notes [Member] | 5.5% Senior Notes Due 2025 [Member] [Member] |  |
Debt Instrument [Line Items] |  |
Interest rate on senior notes |  | 5.50%
Unsecured Debt [Member] | 7.375% Senior Notes Due 2021 [Member] [Member] |  |
Debt Instrument [Line Items] |  |
Interest rate on senior notes |  | 7.375%
Unsecured Debt [Member] | 4.0% Senior Notes Due 2021 [Domain] [Domain] |  |
Debt Instrument [Line Items] |  |
Interest rate on senior notes |  | 4.00%
Unsecured Debt [Member] | 4.5% Senior Notes Due 2023 [Domain] [Domain] |  |
Debt Instrument [Line Items] |  |
Interest rate on senior notes |  | 4.50%
Unsecured Debt [Member] | 8.0% Senior Notes Due 2020 [Domain] |  |
Debt Instrument [Line Items] |  |
Interest rate on senior notes |  | 8.00%
Unsecured Debt [Member] | Recourse Debt [Member] | 4.0% Senior Notes Due 2021 [Domain] [Domain] |  |
Debt Instrument [Line Items] |  |
Gain (loss) on extinguishment of debt |  | $ (125)
Unsecured Debt [Member] | Recourse Debt [Member] | 5.5% Senior Notes Due 2024 [Member] [Member] |  |
Debt Instrument [Line Items] |  |
Gain (loss) on extinguishment of debt |  | $ (44)

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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=114001942&loc=d3e12355-112629 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=114001942&loc=d3e12317-112629 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 + Details
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