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Tax - Deferred Taxes by Territory Explanatory (Detail) - USD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | --- | ---
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | $ 71 | $ 26 | $ 101
Deferred gains on loan notes [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | 35 | 34 | 52
Deferred gains on investments [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | 56 | 54 | 78
Losses [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | (35) | (40) | (44)
Employee benefits [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | (18) | (20) | (27)
Undistributed earnings of subsidiaries [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | 2 |  | 59
Other short-term temporary differences [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | (87) | (82) | (96)
United Kingdom [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | (53) |  |
United Kingdom [member] | Deferred gains on loan notes [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | 0 |  |
United Kingdom [member] | Deferred gains on investments [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | 0 |  |
United Kingdom [member] | Losses [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | (15) |  |
United Kingdom [member] | Employee benefits [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | (4) |  |
United Kingdom [member] | Undistributed earnings of subsidiaries [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | 0 |  |
United Kingdom [member] | Other short-term temporary differences [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | (24) |  |
United States [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | 124 |  |
United States [member] | Deferred gains on loan notes [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | 35 |  |
United States [member] | Deferred gains on investments [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | 56 |  |
United States [member] | Losses [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | (16) |  |
United States [member] | Employee benefits [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | (14) |  |
United States [member] | Undistributed earnings of subsidiaries [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | 2 |  |
United States [member] | Other short-term temporary differences [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | (59) |  |
Other Countries [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | 0 |  |
Other Countries [member] | Deferred gains on loan notes [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | 0 |  |
Other Countries [member] | Deferred gains on investments [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | 0 |  |
Other Countries [member] | Losses [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | (4) |  |
Other Countries [member] | Employee benefits [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | 0 |  |
Other Countries [member] | Undistributed earnings of subsidiaries [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | 0 |  |
Other Countries [member] | Other short-term temporary differences [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | (4) |  |
Property, plant, equipment and software [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | 120 | 98 | 120
Property, plant, equipment and software [member] | United Kingdom [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | (7) |  |
Property, plant, equipment and software [member] | United States [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | 127 |  |
Property, plant, equipment and software [member] | Other Countries [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | 0 |  |
Other intangibles [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | 27 | 7 | (5)
Other intangibles [member] | United Kingdom [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | (4) |  |
Other intangibles [member] | United States [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | 27 |  |
Other intangibles [member] | Other Countries [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | 4 |  |
Application fees and contract costs [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | (29) | $ (25) | $ (36)
Application fees and contract costs [member] | United Kingdom [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | 1 |  |
Application fees and contract costs [member] | United States [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | (34) |  |
Application fees and contract costs [member] | Other Countries [member] |  |  |
Disclosure of deferred taxes [line items] |  |  |
Deferred tax liability asset | $ 4 |  |

X
- Definition The amount of deferred tax liabilities or assets. [Refer: Deferred tax liabilities; Deferred tax assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2018-01-01 -Paragraph 81 -Subparagraph g -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2018-03-01&anchor=para_81_g_i&doctype=Standard -URIDate 2018-03-16 + Details
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