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Commitments and Contingencies (Details 2) (USD $) In Millions, unless otherwise specified | 9 Months Ended | 12 Months Ended | 3 Months Ended
--- | --- | --- | ---
Dec. 31, 2011 | Dec. 31, 2013 | Dec. 31, 2012 | Mar. 31, 2011 Predecessor
Operating Leases |  |  |  |  |
Operating Leases, Rent Expense | $ 125 | $ 83 |  | $ 93 | $ 58
Sublease rental income received | 10 | 4 |  | 8 | 4
Operating leases: |  |  |  |  |
2014 |  | 59 |  |  |
2015 |  | 51 |  |  |
2016 |  | 46 |  |  |
2017 |  | 41 |  |  |
2018 |  | 34 |  |  |
2019 and thereafter |  | 61 |  |  |
Total future minimum payments |  | 292 | [1] |  |
Minimum sublease rentals due in the future under non-cancelable subleases |  | 32 |  |  |
Purchase Obligations |  |  |  |  |
Total purchase commitments |  | 284 |  |  |
2014 |  | 100 |  |  |
2015 through 2016 |  | 134 |  |  |
2016 through 2017 |  | 46 |  |  |
2018 and thereafter |  | $ 4 |  |  |
[1] | Minimum payments have not been reduced by minimum sublease rentals of $32 million due in the future under non-cancelable subleases.

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