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Related Parties (Tables)

12 Months Ended

Dec. 31, 2017

The amounts billed for services provided, sales credited and purchases were as follows (in millions):



	IPL						WPL
	2017		2016		2015		2017		2016		2015
Corporate Services billings		$177		$161		$150		$135		$133		$121
Sales credited	23		8		10		13		7		24
Purchases billed	364		433		366		115		102		66

As of December 31, net intercompany payables to Corporate Services were as follows (in millions):

The related amounts billed between the parties were as follows (in millions):

The amounts billed for services provided, sales credited and purchases were as follows (in millions):



	IPL						WPL
	2017		2016		2015		2017		2016		2015
Corporate Services billings		$177		$161		$150		$135		$133		$121
Sales credited	23		8		10		13		7		24
Purchases billed	364		433		366		115		102		66

As of December 31, net intercompany payables to Corporate Services were as follows (in millions):

The amounts billed for services provided, sales credited and purchases were as follows (in millions):



	IPL						WPL
	2017		2016		2015		2017		2016		2015
Corporate Services billings		$177		$161		$150		$135		$133		$121
Sales credited	23		8		10		13		7		24
Purchases billed	364		433		366		115		102		66

As of December 31, net intercompany payables to Corporate Services were as follows (in millions):

The related amounts billed between the parties were as follows (in millions):