Fair Value of Financial Instruments (Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Debt Securities [Abstract]
Financial investments	$ 225	$ 208
Fair Value, Measurements, Recurring
Debt Securities [Abstract]
Financial investments	225	208
Fair Value, Measurements, Recurring | European government debt securities
Debt Securities [Abstract]
Financial investments	141	144
Fair Value, Measurements, Recurring | Corporate debt securities
Debt Securities [Abstract]
Financial investments	29	20
Fair Value, Measurements, Recurring | State owned enterprises and municipal securities
Debt Securities [Abstract]
Financial investments	27	11
Fair Value, Measurements, Recurring | Swedish mortgage bonds
Debt Securities [Abstract]
Financial investments	19	21
Fair Value, Measurements, Recurring | Time deposits
Debt Securities [Abstract]
Financial investments	0	12
Fair Value, Measurements, Recurring | Commercial paper
Debt Securities [Abstract]
Financial investments	9
Fair Value, Measurements, Recurring | Level 1
Debt Securities [Abstract]
Financial investments	141	144
Fair Value, Measurements, Recurring | Level 1 | European government debt securities
Debt Securities [Abstract]
Financial investments	141	144
Fair Value, Measurements, Recurring | Level 1 | Corporate debt securities
Debt Securities [Abstract]
Financial investments	0	0
Fair Value, Measurements, Recurring | Level 1 | State owned enterprises and municipal securities
Debt Securities [Abstract]
Financial investments	0	0
Fair Value, Measurements, Recurring | Level 1 | Swedish mortgage bonds
Debt Securities [Abstract]
Financial investments	0	0
Fair Value, Measurements, Recurring | Level 1 | Time deposits
Debt Securities [Abstract]
Financial investments	0	0
Fair Value, Measurements, Recurring | Level 1 | Commercial paper
Debt Securities [Abstract]
Financial investments	0
Fair Value, Measurements, Recurring | Level 2
Debt Securities [Abstract]
Financial investments	84	64
Fair Value, Measurements, Recurring | Level 2 | European government debt securities
Debt Securities [Abstract]
Financial investments	0	0
Fair Value, Measurements, Recurring | Level 2 | Corporate debt securities
Debt Securities [Abstract]
Financial investments	29	20
Fair Value, Measurements, Recurring | Level 2 | State owned enterprises and municipal securities
Debt Securities [Abstract]
Financial investments	27	11
Fair Value, Measurements, Recurring | Level 2 | Swedish mortgage bonds
Debt Securities [Abstract]
Financial investments	19	21
Fair Value, Measurements, Recurring | Level 2 | Time deposits
Debt Securities [Abstract]
Financial investments	0	12
Fair Value, Measurements, Recurring | Level 2 | Commercial paper
Debt Securities [Abstract]
Financial investments	9
Fair Value, Measurements, Recurring | Level 3
Debt Securities [Abstract]
Financial investments	0	0
Fair Value, Measurements, Recurring | Level 3 | European government debt securities
Debt Securities [Abstract]
Financial investments	0	0
Fair Value, Measurements, Recurring | Level 3 | Corporate debt securities
Debt Securities [Abstract]
Financial investments	0	0
Fair Value, Measurements, Recurring | Level 3 | State owned enterprises and municipal securities
Debt Securities [Abstract]
Financial investments	0	0
Fair Value, Measurements, Recurring | Level 3 | Swedish mortgage bonds
Debt Securities [Abstract]
Financial investments	0	0
Fair Value, Measurements, Recurring | Level 3 | Time deposits
Debt Securities [Abstract]
Financial investments	0	$ 0
Fair Value, Measurements, Recurring | Level 3 | Commercial paper
Debt Securities [Abstract]
Financial investments	$ 0