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BUSINESS SEGMENTS
 12 Months Ended
Dec. 31, 2013
Text Block [Abstract]  
BUSINESS SEGMENTS
BUSINESS SEGMENTS
We have three reportable segments regularly reviewed by our chief operating decision makers to evaluate performance and make operating decisions.
(1)
TEP, a regulated electric utility and our largest subsidiary
(2)
UNS Electric, a regulated electric utility
(3)
UNS Gas, a regulated gas distribution utility
We disclose selected financial data for our reportable segments in the following tables:
 
Reportable Segments
 
 
 
 
 
 
 
TEP
 
UNS Electric
 
UNS Gas
 
Other (2)
 
Reconciling
Adjustments
 
UNS
Energy
 
Millions of Dollars
2013
 
Income Statement
 
Operating Revenues-External
$
1,180

 
$
174

 
$
131

 
$
2

 
$
(2
)
 
$
1,485

Operating Revenues-Intersegment (1)
17

 
2

 
3

 
17

 
(39
)
 
—

Depreciation and Amortization
149

 
19

 
9

 
—

 
—

 
177

Interest Income
—

 
1

 
—

 
—

 
—

 
1

Interest Expense
79

 
7

 
6

 
1

 
—

 
93

Income Tax Expense
48

 
7

 
7

 
(4
)
 
—

 
58

Net Income
101

 
12

 
11

 
3

 
—

 
127

Cash Flow Statement
 
 
 
 
 
 
 
 
 
 
 
Capital Expenditures
(253
)
 
(56
)
 
(17
)
 
—

 
—

 
(326
)
Balance Sheet
 
 
 
 
 
 
 
 
 
 
 
Total Assets
3,556

 
404

 
311

 
1,194

 
(1,192
)
 
4,273

 
Reportable Segments
 
 
 
 
 
 
 
TEP
 
UNS Electric
 
UNS Gas
 
Other (2)
 
Reconciling
Adjustments
 
UNS
Energy
 
Millions of Dollars
2012
 
Income Statement
 
Operating Revenues-External
$
1,145

 
$
189

 
$
129

 
$
—

 
$
(1
)
 
$
1,462

Operating Revenues-Intersegment (1)
17

 
1

 
4

 
18

 
(40
)
 
—

Depreciation and Amortization
150

 
18

 
9

 
—

 
—

 
177

Interest Income
—

 
—

 
—

 
1

 
—

 
1

Interest Expense
88

 
8

 
6

 
3

 
—

 
105

Income Tax Expense
39

 
11

 
6

 
—

 
—

 
56

Net Income
65

 
17

 
9

 
—

 
—

 
91

Cash Flow Statement
 
 
 
 
 
 
 
 
 
 
 
Capital Expenditures
(253
)
 
(38
)
 
(16
)
 
—

 
—

 
(307
)
Balance Sheet
 
 
 
 
 
 
 
 
 
 
 
Total Assets
3,461

 
370

 
310

 
1,121

 
(1,122
)
 
4,140

2011
 
 
 
 
 
 
 
 
 
 
 
Income Statement
 
 
 
 
 
 
 
 
 
 
 
Operating Revenues-External
$
1,141

 
$
188

 
$
149

 
$
—

 
$
1

 
$
1,479

Operating Revenue-Intersegment (1)
15

 
2

 
2

 
23

 
(42
)
 
—

Depreciation and Amortization
140

 
17

 
8

 
1

 
(1
)
 
165

Interest Income
4

 
—

 
—

 
1

 
—

 
5

Interest Expense
89

 
7

 
7

 
9

 
—

 
112

Income Tax Expense
52

 
11

 
7

 
(1
)
 
(2
)
 
67

Net Income
85

 
18

 
10

 
—

 
(3
)
 
110

Cash Flow Statement
 
 
 
 
 
 
 
 
 
 
 
Capital Expenditures
(352
)
 
(96
)
 
(13
)
 
(34
)
 
121

 
(374
)
(1) 
Operating Revenues – Intersegment includes common costs (system, facilities, etc.) allocated to affiliates on a cost-causative basis and recorded as revenue by TEP, sales of power between TEP and UNS Electric at third-party market prices, control area services provided by TEP to UNS Electric based on a FERC-approved tariff, sales of gas by UNS Gas at third-party market prices for use in UNS Electric's generating facilities, and supplemental workforce charges charges (primarily meter reading services) provided to the utilities by an unregulated affiliate.
(2) 
Other includes the UNS Energy and UES holding companies, Millennium, and UED.