Accounts Receivable (Tables) - Trade receivables [member]

12 Months Ended

Dec. 31, 2019

Statement [LineItems]

Aging Analysis of Accounts Receivable, Net of Loss Allowance

Aging analysis of accounts receivable, net of loss allowance is as follows:

	As of		As of
	December 31, 2019 Million		December 31, 2018 Million
Within 30 days		14,353		11,160
31 - 60 days		3,789		3,680
61 - 90 days		3,035		2,358
90 days - 1 year		9,575		7,649
Over 1 year		1,942		1,693
		32,694		26,540

Summary of Changes in Loss Allowance of Accounts Receivable

The following table summarizes the changes in impairment loss allowance of accounts receivable:

	2019			2018
	Million			Million
As of January 1		7,269			5,863
Credit loss recognized		5,833			4,480
Accounts receivable written off		(3,545	)		(3,074	)
As of December 31		9,557			7,269