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Balance Sheet Components Other Current Liabilities (Details) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Accrued employee compensation and benefits $ 42 $ 46
Accrued interest payable 23 23
Accrued dividends payable 23 22
Accrued taxes payable 19 21
Regulatory liabilities—current 5 1
Other 62 58
Total accrued expenses and other current liabilities $ 174 $ 171