Condensed Consolidated Balance Sheet (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Condensed Consolidated Balance Sheets
Property, plant and equipment, Accumulated depreciation	$ 3,165	$ 3,175
Other intangible assets - accumulated amortization (in dollars)	$ 235	$ 229
Preferred stock, authorized (in shares)	25,000,000	25,000,000
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, issued (in shares)	0	0
Common stock, authorized (in shares)	200,000,000	200,000,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, issued (in shares)	77,810,875	77,810,875
Treasury stock (in shares)	10,737,015	10,795,346