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Note 4. Intangible Assets Intangible Assets (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount of indefinite-lived intangible assets | $ 766 |
Gross carrying amount of total other intangibles | 652 | $ 620
Accumulated Amortization | 339 | 304
Net carrying amount of finite-lived and indefinite-lived intangible assets | 313 | 316
Unamortizable—Trademarks (b) |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount of indefinite-lived intangible assets | 748 | 745
Unamortizable—Title plant shares (e) |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount of indefinite-lived intangible assets | 18 | 11
Amortizable—Franchise agreements (a) |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Assets, Gross | 2,019 | 2,019
Accumulated Amortization | 658 | 591
Net carrying amount of finite-lived intangible assets | $ 1,361 | 1,428
Amortization period | 30 years |
Amortizable—License agreements (c) |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Assets, Gross | $ 45 | 45
Accumulated Amortization | 9 | 8
Net carrying amount of finite-lived intangible assets | $ 36 | 37
Amortization period | 50 years |
Amortizable—Customer relationships (d) |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Assets, Gross | $ 550 | 530
Accumulated Amortization | 312 | 284
Net carrying amount of finite-lived intangible assets | 238 | 246
Amortizable—Pendings and listings (f) |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Assets, Gross | 6 | 3
Accumulated Amortization | 5 | 1
Net carrying amount of finite-lived intangible assets | $ 1 | 2
Amortization period | 5 months |
Amortizable—Other (g) |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Assets, Gross | $ 33 | 31
Accumulated Amortization | 13 | 11
Net carrying amount of finite-lived intangible assets | $ 20 | $ 20
Maximum [Member] | Amortizable—Customer relationships (d) |  |
Finite-Lived Intangible Assets [Line Items] |  |
Amortization period | 20 years |
Maximum [Member] | Amortizable—Other (g) |  |
Finite-Lived Intangible Assets [Line Items] |  |
Amortization period | 10 years |
Minimum [Member] | Amortizable—Customer relationships (d) |  |
Finite-Lived Intangible Assets [Line Items] |  |
Amortization period | 2 years |
Minimum [Member] | Amortizable—Other (g) |  |
Finite-Lived Intangible Assets [Line Items] |  |
Amortization period | 5 years |

X
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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