Risk Management - Foreign Currency Risk (Details) $ in Millions	Jun. 27, 2020 USD ($) position	Dec. 31, 2019 USD ($) position
Derivative [Line Items]
Number of net notional positions to buy or sell foreign currency disclosed (in number of positions) | position	5	5
Foreign Exchange Contract
Derivative [Line Items]
Notional amounts of outstanding foreign exchange contracts	$ 1,000	$ 1,100
Foreign Exchange Contract | Euro | Long
Derivative [Line Items]
Notional amounts of outstanding foreign exchange contracts	213	134
Foreign Exchange Contract | British Pound | Long
Derivative [Line Items]
Notional amounts of outstanding foreign exchange contracts	100	107
Foreign Exchange Contract | Danish Krone | Long
Derivative [Line Items]
Notional amounts of outstanding foreign exchange contracts	27	18
Foreign Exchange Contract | Australian dollar | Short
Derivative [Line Items]
Notional amounts of outstanding foreign exchange contracts	110	123
Foreign Exchange Contract | Chinese renminbi | Short
Derivative [Line Items]
Notional amounts of outstanding foreign exchange contracts	$ 68	$ 79