4. Changes in accumulated other comprehensive loss by component

The changes in accumulated other comprehensive loss by component were as follows:


	Year Ended December 31,
	2015		2014		2013
Foreign currency translation
Balance at beginning of period	$	(66.3)	$	(22.2)	$	12.6
Other comprehensive loss:
Foreign currency translation adjustments(1)		(72.8)		(44.1)		(34.8)
Balance at end of period	$	(139.1)	$	(66.3)	$	(22.2)
Pension
Balance at beginning of period	$	(2.1)	$	(0.4)	$	(1.8)
Other comprehensive income (loss):
Unrecognized net actuarial gain (loss)		2.2		(2.3)		2.4
Tax benefit (expense)		(0.6)		0.6		(0.7)
Total Other comprehensive (loss) income before reclassifications, net of tax		1.6		(1.7)		1.7
Amortization of net actuarial loss		0.1		—		(0.4)
Tax benefit		—		—		0.1
Total amount reclassified from Accumulated other comprehensive loss, net of tax		0.1		—		(0.3)
Total Other comprehensive (loss) income		1.7		(1.7)		1.4
Balance at end of period	$	(0.4)	$	(2.1)	$	(0.4)
Cash flow hedges
Balance at beginning of period	$	0.1	$	0.2	$	(1.4)
Other comprehensive income (loss):
Net change from periodic revaluations		(1.0)		(1.7)		1.2
Tax benefit (expense)		0.4		0.7		(0.5)
Total Other comprehensive (loss) income before reclassifications, net of tax		(0.6)		(1.0)		0.7
Net amount reclassified to earnings:
Interest rate swaps(2)		1.3		1.5		1.7
Fuel commodity swaps		—		—		(0.2)
Sub-total		1.3		1.5		1.5
Tax benefit		(0.6)		(0.6)		(0.6)
Total amount reclassified from Accumulated other comprehensive loss, net of tax		0.7		0.9		0.9
Total Other comprehensive income (loss)		0.1		(0.1)		1.6
Balance at end of period	$	0.2	$	0.1	$	0.2

⁽¹⁾

In all periods presented, there were no tax impacts related to rate changes and no amounts were reclassified to earnings (loss).

⁽²⁾

This amount was included in Interest expense, net on the accompanying consolidated statements of operations.