Supplemental Disclosures

12 Months Ended

Dec. 31, 2014

Supplemental Cash Flow Information [Abstract]

The following schedule provides additional information concerning acquisitions, interest and income taxes paid:



(In millions of dollars)	2014			2013			2012
Assets acquired, excluding cash	$	815		$	217		$	380
Released from escrow in 2012	—			—			(62		)
Liabilities assumed	(64		)	(53		)	(42		)
Contingent/deferred purchase consideration	(197		)	(39		)	(46		)
Net cash outflow for current year acquisitions	554			125			230
Purchase of other intangibles	—			2			3
Net cash outflow for acquisitions	$	554		$	127		$	233



(In millions of dollars)	2014		2013		2012
Interest paid	$	172	$	170	$	183
Income taxes paid, net of refunds	$	426	$	360	$	350

The Company paid deferred purchase consideration related to prior years' acquisitions of $25 million, $15 million and $59 million for the years ended December 31, 2014, 2013 and 2012, respectively.

The Company had non-cash issuances of common stock under its share-based payment plan of $108 million, $150 million and $193 million for the years ended December 31, 2014, 2013 and 2012, respectively. The Company recorded stock-based compensation expense related to equity awards of $75 million, $110 million and $152 million for the years ended December 31, 2014, 2013 and 2012, respectively.

The consolidated statements of cash flows includes the cash flow impact of discontinued operations in each cash flow category, which were insignificant to the overall cash flows of the Company.

An analysis of the allowance for doubtful accounts is as follows:



For the Year Ended December 31,
(In millions of dollars)	2014			2013			2012
Balance at beginning of year	$	98		$	106		$	105
Provision charged to operations	20			16			11
Accounts written-off, net of recoveries	(17		)	(19		)	(12		)
Effect of exchange rate changes and other	(6		)	(5		)	2
Balance at end of year	$	95		$	98		$	106