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Related Parties (Tables)

3 Months Ended

Mar. 31, 2018

The amounts billed for services provided, sales credited and purchases for the three months ended March 31 were as follows (in millions):



	IPL				WPL
	2018		2017		2018		2017
Corporate Services billings		$41		$39		$33		$31
Sales credited	5		2		1		—
Purchases billed	93		66		17		34

Net intercompany payables to Corporate Services were as follows (in millions):



	IPL		WPL
	March 31, 2018	December 31, 2017	March 31, 2018	December 31, 2017
Net payables to Corporate Services	$96	$114	$64	$61

The related amounts billed between the parties for the three months ended March 31 were as follows (in millions):

The amounts billed for services provided, sales credited and purchases for the three months ended March 31 were as follows (in millions):



	IPL				WPL
	2018		2017		2018		2017
Corporate Services billings		$41		$39		$33		$31
Sales credited	5		2		1		—
Purchases billed	93		66		17		34

Net intercompany payables to Corporate Services were as follows (in millions):



	IPL		WPL
	March 31, 2018	December 31, 2017	March 31, 2018	December 31, 2017
Net payables to Corporate Services	$96	$114	$64	$61

The amounts billed for services provided, sales credited and purchases for the three months ended March 31 were as follows (in millions):



	IPL				WPL
	2018		2017		2018		2017
Corporate Services billings		$41		$39		$33		$31
Sales credited	5		2		1		—
Purchases billed	93		66		17		34

Net intercompany payables to Corporate Services were as follows (in millions):



	IPL		WPL
	March 31, 2018	December 31, 2017	March 31, 2018	December 31, 2017
Net payables to Corporate Services	$96	$114	$64	$61

The related amounts billed between the parties for the three months ended March 31 were as follows (in millions):