ACCOUNTS PAYABLE AND OTHER (Tables) - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2020

Dec. 31, 2019

Subclassifications of assets, liabilities and equities [abstract]

Operating expense

$ 47,386

$ 52,728

Schedule of accounts payable and other liabilities

AS AT DEC. 31 (MILLIONS)	2020		2019
Accounts payable	$	9,543	$	9,583
Provisions	5,065		4,104
Lease liabilities	8,223		5,494
Other liabilities	27,851		23,896
Total	$	50,682	$	43,077

Disclosure of current and non-current accounts payable and other [Table Text Block]

The current and non-current balances of accounts payable, provisions and other liabilities are as follows:

AS AT DEC. 31 (MILLIONS)	2020		2019
Current	$	25,857	$	23,212
Non-current	24,825		19,865
Total	$	50,682	$	43,077

Schedule of post-employment benefit plans

AS AT DEC. 31 (MILLIONS)	2020		2019
Plan assets	$	3,335	$	3,029
Less accrued benefit obligation:
Defined benefit pension plan	(4,613)		(3,995)
Other post-employment benefits	(185)		(173)
Net liability	(1,463)		(1,139)
Less: net actuarial gains and other	11		13
Accrued benefit liability	$	(1,452)	$	(1,126)