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INTANGIBLE ASSETS (Schedule of Future Amortization Expense of Intangible Assets) (Details) (USD $)
In Millions, unless otherwise specified
Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
Estimated Amortization Expense, 2015 $ 2us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
Estimated Amortization Expense, 2016 3us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
Estimated Amortization Expense, 2017 3us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
Estimated Amortization Expense, 2018 3us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
Estimated Amortization Expense, 2019 3us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
Estimated Amortization Expense, 2020 $ 2ucc_FutureAmortizationExpenseYearSix