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Intangible Assets - Expected Amortization Expense (Detail) (USD $)
In Millions, unless otherwise specified |
Mar. 31, 2014
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|---|---|
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Acquired Intangible Assets [Member]
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| Schedule Of Goodwill And Other Intangible Assets [Line Items] | |
| 2015 | $ 73 |
| 2016 | 62 |
| 2017 | 45 |
| 2018 | 41 |
| 2019 | 41 |
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Customer Loyalty Payments [Member]
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|
| Schedule Of Goodwill And Other Intangible Assets [Line Items] | |
| 2015 | 61 |
| 2016 | 43 |
| 2017 | 31 |
| 2018 | 25 |
| 2019 | $ 15 |