Accumulated Other Comprehensive Income (Loss) (Tables)

9 Months Ended

Sep. 30, 2013

Equity [Abstract]

Schedule of Changes In Accumulated Other Comprehensive Income Loss

Changes in accumulated other comprehensive income (loss) by component for the three and nine month periods ended September 30, 2013 were as follows (in millions):

	Cash Flow Hedges			Foreign Currency Items			Total
For the Three Months Ended September 30, 2013
Beginning balance, net of tax	$	25.0		($	0.5	)	$	24.5
Other comprehensive income (loss) before reclassifications:
Change in fair value of derivatives		(30.8	)		—			(30.8	)
Foreign currency translations		—			0.3			0.3
Income tax effect		11.1			—			11.1
Net of tax		(19.7	)		0.3			(19.4	)
Amounts reclassified from accumulated other comprehensive income:
Operating revenue: oil/gas production		2.1			—			2.1
Income tax effect		(0.8	)		—			(0.8	)
Net of tax		1.3			—			1.3
Other comprehensive income (loss), net of tax		(18.4	)		0.3			(18.1	)
Ending balance, net of tax	$	6.6		($	0.2	)	$	6.4
For the Nine Months Ended September 30, 2013
Beginning balance, net of tax	$	28.8		$	—		$	28.8
Other comprehensive income (loss) before reclassifications:
Change in fair value of derivatives		(20.9	)		—			(20.9	)
Foreign currency translations		—			(0.2	)		(0.2	)
Income tax effect		7.6			—			7.6
Net of tax		(13.3	)		(0.2	)		(13.5	)
Amounts reclassified from accumulated other comprehensive income:
Operating revenue: oil/gas production		(13.8	)		—			(13.8	)
Income tax effect		4.9			—			4.9
Net of tax		(8.9	)		—			(8.9	)
Other comprehensive income (loss), net of tax		(22.2	)		(0.2	)		(22.4	)
Ending balance, net of tax	$	6.6		($	0.2	)	$	6.4

In 2012, the only component of accumulated other comprehensive income (loss) related to our cash flow hedges. Changes in accumulated other comprehensive income (loss) for the three and nine month periods ended September 30, 2012 were as follows (in millions):

	Cash Flow Hedges
For the Three Months Ended September 30, 2012
Beginning balance, net of tax	$	63.0
Other comprehensive income (loss) before reclassifications:
Change in fair value of derivatives		(41.8	)
Income tax effect		15.0
Net of tax		(26.8	)
Amounts reclassified from accumulated other comprehensive income:
Operating revenue: oil/gas production		(10.0	)
Income tax effect		3.6
Net of tax		(6.4	)
Other comprehensive income, net of tax		(33.2	)
Ending balance, net of tax	$	29.8