Debt - Build-to-suit leases Narrative (Details) $ in Millions |
Jul. 02, 2017
USD ($)
Leases
|
Feb. 28, 2017
USD ($)
|
Jan. 01, 2017
USD ($)
|
---|---|---|---|
Debt Instrument [Line Items] | |||
Number of projects accounted for under build-to-suit lease accounting | Leases | 2 | ||
Build-to-suit lease liability | $ 124 | $ 223 | |
Build-to-suit lease asset under construction | 124 | 223 | |
Obligations under financing leases | 109 | $ 9 | |
Construction In Progress And Build to Suit Lease Liability [Member] | |||
Debt Instrument [Line Items] | |||
Obligations under financing leases | $ 100 | ||
GRAIL, Inc. [Member] | |||
Debt Instrument [Line Items] | |||
Build-to-suit lease liability | $ 58 | ||
Build-to-suit lease asset under construction | $ 58 |