ACCOUNTS PAYABLE AND OTHER

12 Months Ended

Dec. 31, 2017

Subclassifications of assets, liabilities and equities [abstract]



US$ MILLIONS	Note	2017		2016
Current:
Accounts payable⁽¹⁾		$	246	$	266
Accrued & other liabilities		400		274
Deferred revenue	(i)	159		108
Provisions		59		64
Total current		$	864	$	712

Non-current:
Deferred revenue	(i)	$	300	$	293
Pension liabilities⁽²⁾		100		98
Provisions		95		41
Other liabilities		298		148
Total non-current		$	793	$	580


(1)	The average credit period on purchases of goods and services is 30 days. No interest is incurred on trade creditors. Brookfield Infrastructure has financial risk management policies in place to ensure that all payables are paid within the pre-agreed credit terms.


(2)	See Note 31, Retirement Benefit Plans for further details.

Brookfield Infrastructure’s exposure to currency and liquidity risk related to trade and other payables is disclosed in Note 34, Financial Risk Management.


(i)	Deferred revenue

Deferred revenue relates primarily to cash contributions from third parties to build or upgrade existing network capabilities at Brookfield Infrastructure’s Australian rail operation and for future natural gas and electricity connections at Brookfield Infrastructure’s U.K. regulated distribution operation. The deferred revenue is recorded on receipt of cash payments and recognized as revenue over the life of the contracted track access or connections arrangement.