CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net income	$ (1,480)	$ 1,469	$ 1,746
Amounts arising during the period - gains (losses), net of tax (expense) benefit:
Foreign currency translation adjustments, net of tax	372	267	108
Qualifying derivatives, net of tax	(39)	(19)	(11)
Defined benefit plans:
Prior service costs, net of tax	0	(1)	(1)
Net actuarial gain (loss), net of tax	(1)	(341)	(592)
Reclassifications from AOCI - (gains) losses, net of tax expense (benefit):
Qualifying derivatives, net of tax	25	24	13
Defined benefit plans:
Prior service costs, net of tax	2	3	2
Net actuarial (gain) loss, net of tax	126	205	87
Foreign currency translation adjustments, net of tax (UK Sale Reclassification)	786	0	0
Qualifying derivatives, net of tax (UK Sale Reclassification)	15	0	0
Total other comprehensive income (loss)	4,063	138	(394)
Comprehensive income	2,583	1,607	1,352
Net actuarial (gain) loss, net of tax (UK Sale Reclassification)	2,769	0	0
Prior service costs, net of tax (UK Sale Reclassification)	$ 8	$ 0	$ 0