Restructuring - Narrative (Details) - 2019 Restructuring - USD ($) $ in Millions		9 Months Ended
	Oct. 27, 2020	Sep. 30, 2020
Restructuring Cost and Reserve [Line Items]
Total expected pre-tax restructuring charges		$ 190
Subsequent Event
Restructuring Cost and Reserve [Line Items]
Total expected pre-tax restructuring charges	$ 310
Percentage expected to be paid with cash on hand	70.00%
Severance and employee-related costs
Restructuring Cost and Reserve [Line Items]
Percentage of aggregate charge		60.00%
Severance and employee-related costs | Subsequent Event
Restructuring Cost and Reserve [Line Items]
Percentage of aggregate charge	60.00%
Facilities and related costs
Restructuring Cost and Reserve [Line Items]
Percentage of aggregate charge		20.00%
Facilities and related costs | Subsequent Event
Restructuring Cost and Reserve [Line Items]
Percentage of aggregate charge	20.00%
Other costs
Restructuring Cost and Reserve [Line Items]
Percentage of aggregate charge		20.00%
Other costs | Subsequent Event
Restructuring Cost and Reserve [Line Items]
Percentage of aggregate charge	20.00%