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Equity-Based Compensation - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
1 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended | 0 Months Ended | 12 Months Ended | 12 Months Ended | 12 Months Ended | |||||||||||||
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Jun. 18, 2013
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2013
2013 Worldwide Equity Plan [Member]
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Dec. 31, 2011
Worldwide Equity Plan [Member]
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May 31, 2013
Restricted Share Units [Member]
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Dec. 31, 2013
Restricted Share Units [Member]
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Dec. 31, 2012
Restricted Share Units [Member]
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Dec. 31, 2011
Restricted Share Units [Member]
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Apr. 15, 2015
Restricted Share Units [Member]
Subsequent Event [Member]
Scenario, Forecast [Member]
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Dec. 31, 2011
Restricted Share Units [Member]
Worldwide Equity Plan [Member]
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Dec. 31, 2013
Time Based [Member]
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Dec. 31, 2013
Performance Based [Member]
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Dec. 31, 2013
Stock Options [Member]
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Dec. 31, 2012
Stock Options [Member]
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Dec. 31, 2011
Stock Options [Member]
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Dec. 31, 2013
Stock Options [Member]
Worldwide Equity Plan [Member]
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Dec. 31, 2012
Stock Options [Member]
Worldwide Equity Plan [Member]
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Dec. 31, 2011
Number Of Shares [Member]
Worldwide Equity Plan [Member]
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Dec. 31, 2013
Partnership Restricted Equity Units [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||||||||||||||||||||
| Parent company's indirect shareholding in the Company, percentage | 100.00% | ||||||||||||||||||||
| Restricted share units, number of shares, number of options granted | 0.8 | 2.0 | 2.6 | ||||||||||||||||||
| Authorized to grant | 84.1 | 120.0 | |||||||||||||||||||
| Shares granted and vesting description | In May 2013, 75.7 million RSUs were granted to employees, with two-thirds, or 50.5 million RSUs vesting one-sixth semi-annually on April 15 and October 15 each year for a period of three years, if the employee continues to remain in employment. The balance of one-third of the RSUs or 25.2 million, vest on April 15, 2015 upon satisfaction of certain performance conditions. As the performance conditions have not been communicated to the employees, these 25.2 million RSUs have not been considered as granted for accounting purposes. | ||||||||||||||||||||
| Granted restricted share units, shares | 2.6 | 75.7 | 50.5 | ||||||||||||||||||
| Awards not considered as granted for accounting purposes | 25.2 | 2.0 | |||||||||||||||||||
| Options granted | 4 | ||||||||||||||||||||
| Vesting period | 3 years | 3 years | |||||||||||||||||||
| Options vesting | 2 | 2 | |||||||||||||||||||
| Stock options contractual life | 5 years | ||||||||||||||||||||
| Equity compensation expense | $ 6 | $ 2 | $ 6 | $ 5 | $ 1 | $ 5 | |||||||||||||||
| Compensation expense offset by a decrease due to net share settlements | 1 | 1 | 3 | ||||||||||||||||||
| Future equity-based compensation expense | $ 15 | ||||||||||||||||||||