Accumulated Other Comprehensive Income (Loss) (Tables)

9 Months Ended

Sep. 30, 2014

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 months ended September 30, 2014 were as follows (in millions):

	Cash Flow Hedges			Foreign Currency Items			Total
For the Three Months Ended September 30, 2014
Beginning balance, net of tax	($	17.8	)	($	0.4	)	($	18.2	)
Other comprehensive income (loss) before reclassifications:
Change in fair value of derivatives		47.1			—			47.1
Foreign currency translations		—			(1.6	)		(1.6	)
Income tax effect		(16.9	)		—			(16.9	)
Net of tax		30.2			(1.6	)		28.6
Amounts reclassified from accumulated other comprehensive income:
Operating revenue: oil/gas production		(1.3	)		—			(1.3	)
Income tax effect		0.5			—			0.5
Net of tax		(0.8	)		—			(0.8	)
Other comprehensive income (loss), net of tax		31.0			(1.6	)		29.4
Ending balance, net of tax	$	13.2		($	2.0	)	$	11.2

	Cash Flow Hedges			Foreign Currency Items			Total
For the Nine Months Ended September 30, 2014
Beginning balance, net of tax	($	1.4	)	($	0.7	)	($	2.1	)
Other comprehensive income (loss) before reclassifications:
Change in fair value of derivatives		3.7			—			3.7
Foreign currency translations		—			(1.3	)		(1.3	)
Income tax effect		(1.2	)		—			(1.2	)
Net of tax		2.5			(1.3	)		1.2
Amounts reclassified from accumulated other comprehensive income:
Operating revenue: oil/gas production		(17.6	)		—			(17.6	)
Derivative expense, net		(1.5	)		—			(1.5	)
Income tax effect		7.0			—			7.0
Net of tax		(12.1	)		—			(12.1	)
Other comprehensive income (loss), net of tax		14.6			(1.3	)		13.3
Ending balance, net of tax	$	13.2		($	2.0	)	$	11.2

Changes in accumulated other comprehensive income (loss) by component for the three and nine months 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

	Cash Flow Hedges			Foreign Currency Items			Total
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 loss, net of tax		(22.2	)		(0.2	)		(22.4	)
Ending balance, net of tax	$	6.6		($	0.2	)	$	6.4