Commitments and Contingencies - Additional Information (Details) $ in Millions, € in Billions					1 Months Ended
	Nov. 18, 2020 USD ($)	Aug. 11, 2020 USD ($)	Mar. 16, 2020 EUR (€)	Feb. 28, 2020 USD ($)	Oct. 31, 2020 USD ($)	Dec. 26, 2020 USD ($)
Commitments and Contingencies Disclosure [Line Items]
Unconditional purchase obligations						$ 8,100
VirnetX | Pending litigation
Commitments and Contingencies Disclosure [Line Items]
Award from legal proceeding, due to other party					$ 503
iOS Performance Management | Pending litigation | Minimum
Commitments and Contingencies Disclosure [Line Items]
Award from legal proceeding, due to other party				$ 310
iOS Performance Management | Pending litigation | Maximum
Commitments and Contingencies Disclosure [Line Items]
Award from legal proceeding, due to other party				$ 500
iOS Performance Management | Settled litigation
Commitments and Contingencies Disclosure [Line Items]
Award from legal proceeding, due to other party	$ 113
French Competition Authority | Pending litigation
Commitments and Contingencies Disclosure [Line Items]
Award from legal proceeding, due to other party | €			€ 1.1
Optis | Pending litigation
Commitments and Contingencies Disclosure [Line Items]
Award from legal proceeding, due to other party		$ 506