Commitments and Contingencies Other Commitments (Details) $ in Millions	Mar. 25, 2018 USD ($)
QSI [Member]
Other Commitments [Line Items]
Other Commitments	$ 414
Remainder of fiscal 2018 - Other Commitments	77
Other Commitment, due in fiscal 2021	72
Minimum [Member] \| QCT [Member]
Other Commitments [Line Items]
Other Commitments	90
Maximum [Member] \| QCT [Member]
Other Commitments [Line Items]
Other Commitments	$ 315

Minimum amount of other commitment maturing in the fourth fiscal year following the latest fiscal year for commitments not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in this taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

No definition available.

Name:	us-gaap_OtherCommitmentDueInFourthYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant