advance billings and customer deposits (Tables)

12 Months Ended

Dec. 31, 2019

advance billings and customer deposits

Disclosure of advance billings and customer accounts

As at December 31 (millions)	2019		2018
Advance billings	$	522	$	538
Deferred customer activation and connection fees		9		10
Customer deposits		14		13
Contract liabilities		545		561
Other		130		95
	$	675	$	656

Schedule of changes in contract liabilities

Years ended December 31 (millions)	Note	2019		2018
Balance, beginning of period		$	811	$	780
Revenue deferred in previous period and recognized in current period			(648)		(689)
Net additions arising from operations			605		708
Additions arising from business acquisitions	18(b)		33		12
Balance, end of period		$	801	$	811
Current		$	718	$	718
Non-current	27
Deferred revenues			70		78
Deferred customer activation and connection fees			13		15
		$	801	$	811
Reconciliation of contract liabilities presented in the consolidated statements of financial position – current
Gross contract liabilities		$	718	$	718
Reclassification to contract assets for contracts with  contract liabilities less than contract assets			(166)		(154)
Reclassification from contract assets for contracts with contract assets less than contract liabilities			(7)		(3)
		$	545	$	561