13. Supplemental financial information

Acquisition charges

We incurred various costs as a result of the 2011 acquisition of National that are included in Other for segment reporting purposes, consistent with how management measures the performance of its segments. For the years ended December 31, 2015, 2014 and 2013, Acquisition charges were primarily from the ongoing amortization of intangible assets resulting from the National acquisition. See Note 9 for additional information.

Other Income (Expense), Net (OI&E)

	For Years Ended December 31,
	2015			2014			2013
Lease income	$	14		$	14		$	14
Tax interest income (expense)		8			6			(10	)
Interest income		6			7			10
Currency exchange gains (losses)		5			(4	)		(2	)
Investment gains (losses)		3			5			18
Other		(4	)		(7	)		(13	)
Total	$	32		$	21		$	17

Prepaid Expenses and Other Current Assets

	December 31,
	2015		2014
Prepaid taxes on intercompany inventory profits, net	$	801	$	693
Other prepaid expenses and current assets		199		157
Total	$	1,000	$	850

Property, Plant and Equipment at Cost

	Depreciable	December 31,
	Lives (Years)	2015		2014
Land	n/a	$	127	$	137
Buildings and improvements	5 - 40		2,789		2,801
Machinery and equipment	3 - 10		2,549		3,328
Total		$	5,465	$	6,266

Accumulated Other Comprehensive Income (Loss), Net of Taxes (AOCI)

	December 31,
	2015			2014
Postretirement benefit plans:
Net actuarial loss	$	(550	)	$	(529	)
Prior service credit		20			—
Cash flow hedge derivative		(2	)		(3	)
Total	$	(532	)	$	(532	)

Details on amounts reclassified out of Accumulated other comprehensive income (loss), net of taxes, to Net income

Our Consolidated Statements of Comprehensive Income include items that have been recognized within Net income during the years ended December 31, 2015, 2014 and 2013. The table below details where on the Consolidated Statements of Income these transactions are recorded.

	For Years Ended									Impact to
	December 31,									Related Statement
Details about AOCI Components	2015			2014			2013			of Income Line
Net actuarial gains (losses) of defined benefit plans:
Recognized net actuarial loss and Settlement losses (a)	$	78		$	63		$	108		Increase to Pension expense (b)
Tax effect		(25	)		(21	)		(37	)	Decrease to Provision for income taxes
Recognized within Net income, net of taxes	$	53		$	42		$	71		Decrease to Net income

Prior service (cost) credit of defined benefit plans:
Amortization of prior service cost (credit) and Curtailment gain (a)	$	—		$	—		$	(5	)	Decrease to Pension expense (b)
Tax effect		—			—			2		Increase to Provision for income taxes
Recognized within Net income, net of taxes	$	—		$	—		$	(3	)	Increase to Net income

Derivative instruments:
Amortization of treasury rate locks	$	2		$	2		$	2		Increase to Interest and debt expense
Tax effect		(1	)		(1	)		(1	)	Decrease to Provision for income taxes
Recognized within Net income, net of taxes	$	1		$	1		$	1		Decrease to Net income

(a) Detailed in Note 10.
(b) Pension expense is included in COR, R&D, SG&A and Restructuring charges/other in the Consolidated Statements of Income.