Comprehensive Income (Loss) (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2016

Dec. 31, 2015

Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]

Accumulated Other Comprehensive Income (Loss), Net of Tax

Other comprehensive income (loss), net of tax, information is presented below:

	Three Months Ended March 31,
	2016			2015
Foreign currency translation
Balance at beginning of period	$	(2.1	)	$	1.0
Other comprehensive income (loss)—foreign currency translation gain (loss)	1.5			(3.2		)
Balance at end of period	$	(0.6	)	$	(2.2	)
Cash flow hedges
Balance at beginning of period	$	(34.0	)	$	(32.2	)
Other comprehensive income (loss):
Gains (losses) arising in period	(7.8		)	(18.0		)
Income tax expense	—			—
Gains (losses) arising in period, net of tax	(7.8		)	(18.0		)
Reclassification of losses (gains) to net income (loss)—commodity contracts (a)	13.2			17.9
Income tax expense	—			—
Net amount of reclassification of losses (gains) to net income (loss)	13.2			17.9
Total other comprehensive income (loss), net of tax	5.4			(0.1		)
Balance at end of period	$	(28.6	)	$	(32.3	)
Unrealized holding gains on securities
Balance at beginning and end of period	$	—		$	0.4
Pension and OPEB plans
Balance at beginning of period	$	(151.1	)	$	(173.6	)
Other comprehensive income (loss):
Reclassification to net income (loss):
Prior service costs (credits) (b)	(13.8		)	(15.1		)
Actuarial (gains) losses (b)	5.9			8.2
Subtotal	(7.9		)	(6.9		)
Income tax expense	—			—
Amount of reclassification to net income (loss), net of tax	(7.9		)	(6.9		)
Total other comprehensive income (loss), net of tax	(7.9		)	(6.9		)
Balance at end of period	$	(159.0	)	$	(180.5	)

(a) Included in cost of products sold.

(b) Included in pension and OPEB expense (income).

Other comprehensive income (loss), net of tax, information is presented below:

	2015			2014			2013
Foreign currency translation
Balance at beginning of period	$	1.0		$	4.7		$	3.5
Other comprehensive income (loss)—foreign currency translation gain (loss)	(3.1		)	(3.7		)	1.2
Balance at end of period	$	(2.1	)	$	1.0		$	4.7
Cash flow hedges
Balance at beginning of period	$	(32.2	)	$	18.3		$	31.7
Other comprehensive income (loss):
Gains (losses) arising in period	(64.2		)	(51.6		)	3.5
Income tax expense	24.9			—			1.3
Gains (losses) arising in period, net of tax	(89.1		)	(51.6		)	2.2
Reclassification of losses (gains) to net income (loss):
Hot roll carbon steel coil contracts (a)	—			—			(0.4		)
Other commodity contracts (b)	61.4			1.1			(24.8		)
Subtotal	61.4			1.1			(25.2		)
Income tax expense (d)	(25.9		)	—			(9.6		)
Net amount of reclassification of losses (gains) to net income (loss)	87.3			1.1			(15.6		)
Total other comprehensive income (loss), net of tax	(1.8		)	(50.5		)	(13.4		)
Balance at end of period	$	(34.0	)	$	(32.2	)	$	18.3
Unrealized holding gains on securities
Balance at beginning of period	$	0.4		$	0.4		$	0.3
Other comprehensive income (loss):
Unrealized holding gains (losses) arising in period	—			—			0.2
Income tax expense	—			—			0.1
Unrealized holding gains (losses) arising in period, net of tax	—			—			0.1
Reclassification of gains (losses) to net income (loss)—income tax benefit (d)	0.4			—			—
Total other comprehensive income (loss), net of tax	(0.4		)	—			0.1
Balance at end of period	$	—		$	0.4		$	0.4
Pension and OPEB plans
Balance at beginning of period	$	(173.6	)	$	300.0		$	(34.4	)
Other comprehensive income (loss):
Prior service credit (cost) arising in period	(7.7		)	10.9			(6.1		)
Gains (losses) arising in period	(60.8		)	(422.5		)	422.3
Subtotal	(68.5		)	(411.6		)	416.2
Income tax expense (benefit) (d)	(26.0		)	—			50.3
Gains (losses) arising in period, net of tax	(42.5		)	(411.6		)	365.9
Reclassification to net income (loss):
Prior service costs (credits) (c)	(60.2		)	(68.9		)	(76.2		)
Actuarial (gains) losses (c)	165.0			6.9			25.3
Subtotal	104.8			(62.0		)	(50.9		)
Income tax (expense) benefit (d)	39.8			—			(19.4		)
Amount of reclassification to net income (loss), net of tax	65.0			(62.0		)	(31.5		)
Total other comprehensive income (loss), net of tax	22.5			(473.6		)	334.4
Balance at end of period	$	(151.1	)	$	(173.6	)	$	300.0

(a) Included in net sales

(b) Included in cost of products sold

(c) Included in pension and OPEB expense (income)

(d) Included in income tax expense (benefit)