XML 176 R130.htm IDEA: XBRL DOCUMENT v3.3.1.900
Subsidiary Debt - Summary (Details) - USD ($)
$ in Millions
Dec. 31, 2015
Dec. 31, 2014
Debt Instrument [Line Items]    
Par value $ 38,133  
Other Long-term Debt, Noncurrent 26,066 $ 25,616
Subsidiary Debt [Member]    
Debt Instrument [Line Items]    
Par value 27,314  
Other Long-term Debt, Current 1,148 1,232
Other Long-term Debt, Noncurrent 26,066 25,616
Other long-term debt 27,214 26,848
Subsidiary Debt [Member] | PacifiCorp [Member]    
Debt Instrument [Line Items]    
Par value 7,204  
Other long-term debt 7,159 7,055
Eligible Property Subject To Lien Of Mortgages 25,000  
Subsidiary Debt [Member] | MidAmerican Funding [Member]    
Debt Instrument [Line Items]    
Par value 4,627  
Other long-term debt 4,560 4,323
Eligible Property Subject To Lien Of Mortgages 13,000  
Subsidiary Debt [Member] | NV Energy [Member]    
Debt Instrument [Line Items]    
Par value 4,840  
Other long-term debt 4,860 5,118
Subsidiary Debt [Member] | Northern Powergrid Holdings [Member]    
Debt Instrument [Line Items]    
Par value [1] 2,735  
Other long-term debt 2,772 2,317
Subsidiary Debt [Member] | BHE Pipeline Group [Member]    
Debt Instrument [Line Items]    
Par value 1,045  
Other long-term debt 1,040 1,358
Subsidiary Debt [Member] | BHE Transmission [Member]    
Debt Instrument [Line Items]    
Par value [2] 3,469  
Other long-term debt 3,467 3,743
Subsidiary Debt [Member] | BHE Renewables [Member]    
Debt Instrument [Line Items]    
Par value 3,394  
Other long-term debt 3,356 2,934
Letters of credit supporting tax-exempt bond obligations [Member] | Letter of Credit [Member] | Subsidiary Debt [Member] | PacifiCorp [Member]    
Debt Instrument [Line Items]    
Letters of Credit Outstanding, Amount $ 310 $ 451
Maximum [Member] | Subsidiary Debt [Member] | PacifiCorp [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate 0.22% 0.22%
Minimum [Member] | Subsidiary Debt [Member] | PacifiCorp [Member]    
Debt Instrument [Line Items]    
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate 0.01% 0.02%
MidAmerican Energy Company [Member] | Subsidiary Debt [Member]    
Debt Instrument [Line Items]    
Par value $ 4,302  
Other long-term debt 4,271 $ 4,034
AltaLink, L.P. [Member] | Subsidiary Debt [Member]    
Debt Instrument [Line Items]    
Par value [2] 2,926  
Other long-term debt 2,911 3,173
ALP Investments [Member] | Subsidiary Debt [Member]    
Debt Instrument [Line Items]    
Par value [2] 543  
Other long-term debt 556 492
MEC First Mortgage Bonds, 4.25%, Due May 2046 [Member] | MidAmerican Energy Company [Member] | Subsidiary Debt [Member]    
Debt Instrument [Line Items]    
Par value 450  
Other long-term debt $ 444 $ 0
MEC First Mortgage Bonds, 4.25%, Due May 2046 [Member] | MidAmerican Energy Company [Member] | Subsidiary Debt [Member] | MidAmerican Funding [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Interest Rate, Stated Percentage 4.25% 0.00%
Series 09-1 Senior Bonds, 5.207%, due 2016 [Member] | ALP Investments [Member] | Subsidiary Debt [Member]    
Debt Instrument [Line Items]    
Par value [2] $ 108  
Other long-term debt $ 112 $ 136
Debt Instrument, Interest Rate, Stated Percentage 5.207% 5.207%
First Mortgage Bonds, 5.50% To 8.635%, Due Through 2019 [Member] | Subsidiary Debt [Member] | PacifiCorp [Member]    
Debt Instrument [Line Items]    
Par value $ 855  
Other long-term debt $ 853 $ 859
First Mortgage Bonds, 5.50% To 8.635%, Due Through 2019 [Member] | Maximum [Member] | Subsidiary Debt [Member] | PacifiCorp [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Interest Rate, Stated Percentage 8.635% 8.635%
First Mortgage Bonds, 5.50% To 8.635%, Due Through 2019 [Member] | Minimum [Member] | Subsidiary Debt [Member] | PacifiCorp [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Interest Rate, Stated Percentage 5.50% 5.50%
First Mortgage Bonds, 4.10%, Due 2042 [Member] | Subsidiary Debt [Member] | PacifiCorp [Member]    
Debt Instrument [Line Items]    
Par value $ 300  
Other long-term debt $ 297 $ 297
Debt Instrument, Interest Rate, Stated Percentage 4.10% 4.10%
Capital lease obligations, 8.75% to 15.678%, due through 2035 [Member] | Subsidiary Debt [Member] | PacifiCorp [Member]    
Debt Instrument [Line Items]    
Par value $ 45  
Other long-term debt $ 45 $ 70
Capital lease obligations, 8.75% to 15.678%, due through 2035 [Member] | Maximum [Member] | Subsidiary Debt [Member] | PacifiCorp [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Interest Rate, Stated Percentage 15.678% 15.678%
Capital lease obligations, 8.75% to 15.678%, due through 2035 [Member] | Minimum [Member] | Subsidiary Debt [Member] | PacifiCorp [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Interest Rate, Stated Percentage 8.75% 8.75%
Series 2015-1 Notes, 4.090%, due 2045 [Member] | AltaLink, L.P. [Member] | Subsidiary Debt [Member]    
Debt Instrument [Line Items]    
Par value [2] $ 253  
Other long-term debt $ 251 $ 0
Debt Instrument, Interest Rate, Stated Percentage 4.09% 0.00%
Series 15-1 Senior Bonds, 2.244%, due 2022 [Member] | ALP Investments [Member] | Subsidiary Debt [Member]    
Debt Instrument [Line Items]    
Par value [2] $ 145  
Other long-term debt $ 144 $ 0
Debt Instrument, Interest Rate, Stated Percentage 2.244% 0.00%
First Mortgage Bonds, 2.95% To 8.53%, Due 2021 To 2025 [Member] | Subsidiary Debt [Member] | PacifiCorp [Member]    
Debt Instrument [Line Items]    
Par value $ 2,149  
Other long-term debt $ 2,137 $ 1,888
First Mortgage Bonds, 2.95% To 8.53%, Due 2021 To 2025 [Member] | Maximum [Member] | Subsidiary Debt [Member] | PacifiCorp [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Interest Rate, Stated Percentage 8.53% 8.53%
First Mortgage Bonds, 2.95% To 8.53%, Due 2021 To 2025 [Member] | Minimum [Member] | Subsidiary Debt [Member] | PacifiCorp [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Interest Rate, Stated Percentage 2.95% 2.95%
First Mortgage Bonds, 6.71%, Due 2026 [Member] | Subsidiary Debt [Member] | PacifiCorp [Member]    
Debt Instrument [Line Items]    
Par value $ 100  
Other long-term debt $ 100 $ 100
Debt Instrument, Interest Rate, Stated Percentage 6.71% 6.71%
First Mortgage Bonds, 5.25% To 7.70%, Due 2031 To 2035 [Member] | Subsidiary Debt [Member] | PacifiCorp [Member]    
Debt Instrument [Line Items]    
Par value $ 800  
Other long-term debt $ 794 $ 793
First Mortgage Bonds, 5.25% To 7.70%, Due 2031 To 2035 [Member] | Maximum [Member] | Subsidiary Debt [Member] | PacifiCorp [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Interest Rate, Stated Percentage 7.70% 7.70%
First Mortgage Bonds, 5.25% To 7.70%, Due 2031 To 2035 [Member] | Minimum [Member] | Subsidiary Debt [Member] | PacifiCorp [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Interest Rate, Stated Percentage 5.25% 5.25%
First Mortgage Bonds, 5.75% To 6.35%, Due 2036 To 2039 [Member] | Subsidiary Debt [Member] | PacifiCorp [Member]    
Debt Instrument [Line Items]    
Par value $ 2,500  
Other long-term debt $ 2,480 $ 2,479
First Mortgage Bonds, 5.75% To 6.35%, Due 2036 To 2039 [Member] | Maximum [Member] | Subsidiary Debt [Member] | PacifiCorp [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Interest Rate, Stated Percentage 6.35% 6.35%
First Mortgage Bonds, 5.75% To 6.35%, Due 2036 To 2039 [Member] | Minimum [Member] | Subsidiary Debt [Member] | PacifiCorp [Member]    
Debt Instrument [Line Items]    
Debt Instrument, Interest Rate, Stated Percentage 5.75% 5.75%
Tax-exempt bond obligations, variable rate series, due 2018 to 2025 [Member] | Subsidiary Debt [Member] | PacifiCorp [Member]    
Debt Instrument [Line Items]    
Par value [3] $ 107  
Other long-term debt [3] 107 $ 223
Tax-exempt bond obligations, variable rate series, due 2016 to 2024 [Member] | Subsidiary Debt [Member] | PacifiCorp [Member]    
Debt Instrument [Line Items]    
Par value [3],[4] 198  
Other long-term debt [3],[4] 196 219
Tax-exempt bond obligations, variable rate series, due 2016 to 2025 [Member] | Subsidiary Debt [Member] | PacifiCorp [Member]    
Debt Instrument [Line Items]    
Par value [4] 59  
Other long-term debt [4] 59 36
Tax-exempt bond obligations, variable rate series, due 2017 to 2018 [Member] | Subsidiary Debt [Member] | PacifiCorp [Member]    
Debt Instrument [Line Items]    
Par value 91  
Other long-term debt 91 91
Series 12-1 Senior Bonds, 3.674%, due 2019 [Member] | ALP Investments [Member] | Subsidiary Debt [Member]    
Debt Instrument [Line Items]    
Par value [2] 145  
Other long-term debt $ 151 $ 180
Debt Instrument, Interest Rate, Stated Percentage 3.674% 3.674%
Series 13-1 Senior Bonds, 3.265%, due 2020 [Member] | ALP Investments [Member] | Subsidiary Debt [Member]    
Debt Instrument [Line Items]    
Par value [2] $ 145  
Other long-term debt $ 149 $ 176
Debt Instrument, Interest Rate, Stated Percentage 3.265% 3.265%
Senior debentures, 10.5%, due 2015 [Member] | AltaLink Holdings, L.P. [Member] | Subsidiary Debt [Member]    
Debt Instrument [Line Items]    
Par value [2] $ 0  
Other long-term debt $ 0 $ 78
Debt Instrument, Interest Rate, Stated Percentage 0.00% 10.50%
Series 2008-1 Notes, 5.243%, due 2018 [Member] | AltaLink, L.P. [Member] | Subsidiary Debt [Member]    
Debt Instrument [Line Items]    
Par value [2] $ 145  
Other long-term debt $ 145 $ 171
Debt Instrument, Interest Rate, Stated Percentage 5.243% 5.243%
Series 2013-2 Notes, 3.621%, due 2020 [Member] | AltaLink, L.P. [Member] | Subsidiary Debt [Member]    
Debt Instrument [Line Items]    
Par value [2] $ 90  
Other long-term debt $ 90 $ 108
Debt Instrument, Interest Rate, Stated Percentage 3.621% 3.621%
Series 2012-2 Notes, 2.978%, due 2022 [Member] | AltaLink, L.P. [Member] | Subsidiary Debt [Member]    
Debt Instrument [Line Items]    
Par value [2] $ 199  
Other long-term debt $ 198 $ 236
Debt Instrument, Interest Rate, Stated Percentage 2.978% 2.978%
Series 2013-4 Notes, 3.668%, due 2023 [Member] | AltaLink, L.P. [Member] | Subsidiary Debt [Member]    
Debt Instrument [Line Items]    
Par value [2] $ 361  
Other long-term debt $ 360 $ 429
Debt Instrument, Interest Rate, Stated Percentage 3.668% 3.668%
Series 2014-1 Notes, 3.399%, due 2024 [Member] | AltaLink, L.P. [Member] | Subsidiary Debt [Member]    
Debt Instrument [Line Items]    
Par value [2] $ 253  
Other long-term debt $ 252 $ 300
Debt Instrument, Interest Rate, Stated Percentage 3.399% 3.399%
Series 2006-1 Notes, 5.249%, due 2036 [Member] | AltaLink, L.P. [Member] | Subsidiary Debt [Member]    
Debt Instrument [Line Items]    
Par value [2] $ 108  
Other long-term debt $ 108 $ 128
Debt Instrument, Interest Rate, Stated Percentage 5.249% 5.249%
Series 2010-1 Notes, 5.381%, due 2040 [Member] | AltaLink, L.P. [Member] | Subsidiary Debt [Member]    
Debt Instrument [Line Items]    
Par value [2] $ 90  
Other long-term debt $ 90 $ 108
Debt Instrument, Interest Rate, Stated Percentage 5.381% 5.381%
Series 2010-2 Notes, 4.872%, due 2040 [Member] | AltaLink, L.P. [Member] | Subsidiary Debt [Member]    
Debt Instrument [Line Items]    
Par value [2] $ 108  
Other long-term debt $ 108 $ 128
Debt Instrument, Interest Rate, Stated Percentage 4.872% 4.872%
Series 2011-1 Notes, 4.462%, due 2041 [Member] | AltaLink, L.P. [Member] | Subsidiary Debt [Member]    
Debt Instrument [Line Items]    
Par value [2] $ 199  
Other long-term debt $ 198 $ 236
Debt Instrument, Interest Rate, Stated Percentage 4.462% 4.462%
Series 2012-1 Notes, 3.99%, due 2042 [Member] | AltaLink, L.P. [Member] | Subsidiary Debt [Member]    
Debt Instrument [Line Items]    
Par value [2] $ 379  
Other long-term debt $ 374 $ 451
Debt Instrument, Interest Rate, Stated Percentage 3.99% 3.99%
Series 2013-3 Notes, 4.922%, due 2043 [Member] | AltaLink, L.P. [Member] | Subsidiary Debt [Member]    
Debt Instrument [Line Items]    
Par value [2] $ 253  
Other long-term debt $ 252 $ 300
Debt Instrument, Interest Rate, Stated Percentage 4.922% 4.922%
Series 2014-3 Notes, 4.054%, due 2044 [Member] | AltaLink, L.P. [Member] | Subsidiary Debt [Member]    
Debt Instrument [Line Items]    
Par value [2] $ 213  
Other long-term debt $ 212 $ 253
Debt Instrument, Interest Rate, Stated Percentage 4.054% 4.054%
Series 2013-1 Notes, 4.446%, due 2053 [Member] | AltaLink, L.P. [Member] | Subsidiary Debt [Member]    
Debt Instrument [Line Items]    
Par value [2] $ 181  
Other long-term debt $ 180 $ 214
Debt Instrument, Interest Rate, Stated Percentage 4.446% 4.446%
Series 2014-2 Notes, 4.274%, due 2064 [Member] | AltaLink, L.P. [Member] | Subsidiary Debt [Member]    
Debt Instrument [Line Items]    
Par value [2] $ 94  
Other long-term debt $ 93 $ 111
Debt Instrument, Interest Rate, Stated Percentage 4.274% 4.274%
[1] The par values for these debt instruments are denominated in sterling.
[2] (1)The par values for these debt instruments are denominated in Canadian dollars.
[3] Supported by $310 million and $451 million of fully available letters of credit issued under committed bank arrangements as of December 31, 2015 and 2014, respectively.
[4] Secured by pledged first mortgage bonds registered to and held by the tax-exempt bond trustee generally with the same interest rates, maturity dates and redemption provisions as the tax-exempt bond obligations.