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Condensed Parent Company Financial Statements (Tables)
 12 Months Ended
Dec. 31, 2017
Condensed Financial Information of Parent Company Only Disclosure [Abstract]  
Condensed Statements of Income
ALLIANT ENERGY CORPORATION (Parent Company Only)
CONDENSED STATEMENTS OF INCOME
 
Year Ended December 31,
 
2017
 
2016
 
2015
 
(in millions)
Operating revenues

$—

 

$1

 

$2

Operating expenses
2

 
3

 
3

Operating loss
(2
)
 
(2
)
 
(1
)
Interest expense and other:
 
 
 
 
 
Equity earnings from consolidated subsidiaries
(457
)
 
(374
)
 
(379
)
Interest expense
3

 
3

 
3

Interest income
—

 
(2
)
 
(3
)
Total interest expense and other
(454
)
 
(373
)
 
(379
)
Income before income taxes
452

 
371

 
378

Income tax benefit
(6
)
 
(1
)
 
(1
)
Net income

$458

 

$372

 

$379


The accompanying Notes to Condensed Financial Statements are an integral part of these statements.
Condensed Balance Sheets
ALLIANT ENERGY CORPORATION (Parent Company Only)
CONDENSED BALANCE SHEETS
 
December 31,
 
2017
 
2016
 
(in millions)
ASSETS
 
 
 
Current assets:
 
 
 
Notes receivable from affiliated companies

$50

 

$74

Other
7

 
5

Total current assets
57

 
79

Investments:
 
 
 
Investments in consolidated subsidiaries
4,676

 
4,211

Other
2

 
2

Total investments
4,678

 
4,213

Other assets
78

 
64

Total assets

$4,813

 

$4,356

LIABILITIES AND EQUITY
 
 
 
Current liabilities:
 
 
 
Commercial paper

$295

 

$192

Notes payable to affiliated companies
305

 
275

Other
12

 
12

Total current liabilities
612

 
479

Other liabilities
20

 
18

Common equity:
 
 
 
Common stock and additional paid-in capital
1,848

 
1,695

Retained earnings
2,344

 
2,174

Shares in deferred compensation trust
(11
)
 
(10
)
Total common equity
4,181

 
3,859

Total liabilities and equity

$4,813

 

$4,356


The accompanying Notes to Condensed Financial Statements are an integral part of these statements.
Condensed Statements of Cash Flows
ALLIANT ENERGY CORPORATION (Parent Company Only)
CONDENSED STATEMENTS OF CASH FLOWS

Year Ended December 31,

2017

2016

2015

(in millions)
Net cash flows from operating activities

$273



$254



$262

Cash flows from (used for) investing activities:








Capital contributions to consolidated subsidiaries
(290
)

(250
)

(165
)
Capital repayments from consolidated subsidiaries
—


130


—

Net change in notes receivable from and payable to affiliates
54

 
294

 
2

Other
—


10


—

Net cash flows from (used for) investing activities
(236
)

184


(163
)
Cash flows used for financing activities:








Common stock dividends
(288
)

(267
)

(247
)
Proceeds from issuance of common stock, net
150

 
27

 
151

Payments to retire long-term debt
—

 
(250
)
 
—

Net change in commercial paper
103


52


(1
)
Other
(2
)

—


(2
)
Net cash flows used for financing activities
(37
)

(438
)

(99
)
Net increase (decrease) in cash and cash equivalents
—


—


—

Cash and cash equivalents at beginning of period
—


—


—

Cash and cash equivalents at end of period

$—



$—



$—

Supplemental cash flows information:








Cash paid during the period for:








Interest, net of capitalized interest

($3
)


($3
)


($3
)
Income taxes, net
—


(37
)

(9
)
The accompanying Notes to Condensed Financial Statements are an integral part of these statements.