Segment Reporting - Selected Financial Information For Reportable Segments (Details) - USD ($) $ in Millions	3 Months Ended						9 Months Ended		12 Months Ended
	Sep. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Segment Reporting, Asset Reconciling Item [Line Items]
Total Revenues	$ 1,652	$ 1,715	$ 1,941	$ 1,751	$ 1,747	$ 1,668	$ 5,121	$ 5,166	$ 7,107
Depreciation and amortization	63			65			189	205
Interest income	49			55			159	164
Total Interest expense	44			49			140	151
Intersegment revenue
Segment Reporting, Asset Reconciling Item [Line Items]
Total Revenues	(21)	(23)	(22)	(23)	(22)	(23)	(65)	(68)	(90)
Operating Segments
Segment Reporting, Asset Reconciling Item [Line Items]
Total Revenues	1,673			1,774			5,186	5,234
Segment profit	$ 68	118	178	$ 65	35	(3)	$ 293	$ 97	275
Segment margin	4.10%			3.70%			5.70%	1.90%
Depreciation and amortization	$ 51			$ 55			$ 156	$ 174
Interest income	46			51			147	156
Total Interest expense	30			28			100	78
Print and Other
Segment Reporting, Asset Reconciling Item [Line Items]
Total Revenues	1,554			1,653			4,820	4,874
Print and Other | Intersegment revenue
Segment Reporting, Asset Reconciling Item [Line Items]
Total Revenues	(21)			(23)			(65)	(68)
Print and Other | Operating Segments
Segment Reporting, Asset Reconciling Item [Line Items]
Total Revenues	1,575	1,636	1,862	1,676	1,673	1,593	4,885	4,942	6,804
Segment profit	$ 64	100	177	$ 63	29	(11)	$ 271	$ 81	258
Segment margin	4.10%			3.80%			5.60%	1.70%
Depreciation and amortization	$ 51			$ 55			$ 156	$ 174
Interest income	0			0			0	0
Total Interest expense	0			0			0	0
FITTLE
Segment Reporting, Asset Reconciling Item [Line Items]
Total Revenues	98			98			301	292
FITTLE | Intersegment revenue
Segment Reporting, Asset Reconciling Item [Line Items]
Total Revenues	0			0			0	0
FITTLE | Operating Segments
Segment Reporting, Asset Reconciling Item [Line Items]
Total Revenues	98	102	101	98	96	98	301	292	393
Segment profit	$ 4	$ 18	$ 1	$ 2	$ 6	$ 8	$ 22	$ 16	$ 17
Segment margin	4.10%			2.00%			7.30%	5.50%
Depreciation and amortization	$ 0			$ 0			$ 0	$ 0
Interest income	46			51			147	156
Total Interest expense	$ 30			$ 28			$ 100	$ 78