
	As of December 31,
	2021		2022		2022
	RMB		RMB		US$
	(In millions)
Released, less amortization and impairment
— Predominantly monetized with other content assets		2,850		3,725		540
— Predominantly monetized on its own		30		90		13

		2,880		3,815		553
In production, less impairment
— Predominantly monetized with other content assets		6,338		7,582		1,099
— Predominantly monetized on its own		504		660		96

		6,842		8,242		1,195
In development, less impairment
— Predominantly monetized with other content assets		1,134		910		132
— Predominantly monetized on its own		95		35		5

		1,229		945		137

Total		10,951		13,002		1,885

Amortization expense of RMB3,024 million, RMB4,641 million and RMB4,557 million (US$661 million) and RMB1,095 million, RMB1,319 million and RMB735 million (US$107 million) was recognized as cost of

revenues

in the consolidated statements of comprehensive income for the years ended December 31, 2020, 2021 and 2022, for produced content predominantly monetized with other content assets and for produced content predominantly monetized on its own, respectively. As of December 31,

2022

, approximately RMB192 million (US$28 million) of accrued participation liabilities will be paid during the upcoming operating cycle.

Estimated amortization expense relating to the existing produced content for each of the next three years is as follows:


	RMB		US$
	(In millions)
Within 1 year		1,447		210
Between 1 and 2 years		588		85
Between 2 and 3 years		423		61