June 30,
December 31,
As at (millions)
Note
2019
2018
Pension assets
$
503
Costs incurred to obtain or fulfill a contract with a customer
105
110
Portfolio investments 1
70
Prepaid maintenance
45
55
Real estate joint venture advances
21(c )
86
69
Real estate joint ventures
5
Derivative assets
4(d )
2
54
Other
103
120
919
986
(1)
Fair value measured at reporting date using significant other observable inputs (Level 2).
Three months
Six months
Costs incurred to
Obtain
contracts with
Fulfill contracts
Periods ended June 30, 2019 (millions)
customers
with customers
Total
Balance, beginning of period
342
15
357
356
371
Additions
1
71
131
133
Amortization
(75)
(76)
(150)
(2)
(152)
Balance, end of period
337
352
Current 1
—
242
247
Non-current
95
10
Presented on the Consolidated statements of financial position in prepaid expenses.
The disclosure of assets recognised from the costs to obtain or fulfill contracts with customers.
No definition available.
n/a
The tabular disclosure of detailed information about the components of other long-term assets.