Investment in Transmission Affiliates (Tables)

12 Months Ended

Dec. 31, 2018

The following tables provide a reconciliation of the changes in our investments in ATC and ATC Holdco:



	2018
(in millions)	ATC		ATC Holdco			Total
Balance at January 1	$	1,515.8	$	37.6		$	1,553.4
Add: Earnings (loss) from equity method investment	139.6		(2.9		)	136.7
Add: Capital contributions	48.2		5.3			53.5
Less: Distributions	78.2		—			78.2
Less: Other	0.1		—			0.1
Balance at December 31	$	1,625.3	$	40.0		$	1,665.3



	2017
(in millions)	ATC			ATC Holdco			Total
Balance at January 1	$	1,443.9		$	—		$	1,443.9
Add: Earnings (loss) from equity method investment	166.0			(11.7		)	154.3
Add: Capital contributions	60.3			49.3			109.6
Less: Distributions	154.2		*	—			154.2
Less: Other	0.2			—			0.2
Balance at December 31	$	1,515.8		$	37.6		$	1,553.4


*	Of this amount, $39.9 million was recorded as a receivable from ATC in other current assets at December 31, 2017.



	ATC
(in millions)	2016
Balance at January 1	$	1,380.9
Add: Earnings from equity method investment	146.5
Add: Capital contributions	42.3
Add: Acquisition of Integrys's investment in ATC	(1.0		)
Add: Equity method goodwill from the acquisition of Integrys ⁽¹⁾	10.4
Less: Distributions ⁽²⁾	135.1
Less: Other	0.1
Balance at December 31	$	1,443.9


⁽¹⁾	Represents an adjustment to the purchase price allocated to Integrys's investment in ATC in excess of the recorded value.


⁽²⁾	Of this amount, $35.2 million was recorded as a receivable from ATC in other current assets at December 31, 2016.

The following table summarizes our significant related party transactions with ATC during the years ended December 31:



(in millions)	2018		2017		2016
Charges to ATC for services and construction	$	21.8	$	17.1	$	18.5
Charges from ATC for network transmission services	338.1		349.3		357.3
Refund from ATC related to a FERC audit	22.0		—		—
Refund from ATC per FERC ROE order	—		28.3		—

As of December 31, 2018 and 2017, our balance sheets included the following receivables and payables related to ATC:



(in millions)	2018		2017
Accounts receivable
Services provided to ATC	$	3.4	$	1.5
Other current assets
Dividends receivable from ATC	—		39.9
Accounts payable
Services received from ATC	28.2		31.2

Summarized financial data for ATC is included in the tables below:



(in millions)	December 31, 2018		December 31, 2017
Balance sheet data
Current assets	$	87.2	$	87.7
Noncurrent assets	4,928.8		4,598.9
Total assets	$	5,016.0	$	4,686.6

Current liabilities	$	640.0	$	767.2
Long-term debt	2,014.0		1,790.6
Other noncurrent liabilities	295.3		240.3
Shareholders' equity	2,066.7		1,888.5
Total liabilities and shareholders' equity	$	5,016.0	$	4,686.6