Supplemental Disclosures (Tables)

12 Months Ended

Dec. 31, 2016

Supplemental Cash Flow Information [Abstract]

Additional information concerning acquisitions, interest and income taxes paid

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

(In millions of dollars)	2016			2015			2014
Assets acquired, excluding cash	$	960		$	1,327		$	815
Liabilities assumed	(111		)	(199		)	(64		)
Contingent/deferred purchase consideration	(36		)	(176		)	(197		)
Net cash outflow for acquisitions	$	813		$	952		$	554

(In millions of dollars)	2016		2015		2014
Interest paid	$	178	$	146	$	172
Income taxes paid, net of refunds	$	642	$	433	$	426

Analysis of allowance for doubtful accounts

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

For the Years Ended December 31,
(In millions of dollars)	2016			2015			2014
Balance at beginning of year	$	87		$	95		$	98
Provision charged to operations	31			14			20
Accounts written-off, net of recoveries	(20		)	(18		)	(17		)
Effect of exchange rate changes and other	(2		)	(4		)	(6		)
Balance at end of year	$	96		$	87		$	95