v3.26.1
Earnings Per Share (Calculations for EPS) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Basic and diluted net earnings per share:            
Net income attributable to Xylem $ 263 $ 193 $ 226 $ 169 $ 456 $ 395
Shares            
Weighted average common shares outstanding (in shares) 236,276   243,370   239,518 243,227
Add: Participating securities (in shares) 19   27   16 24
Weighted average common shares outstanding - Basic (in shares) 236,295   243,397   239,534 243,251
Plus incremental shares from assumed conversions:            
Weighted average common shares outstanding - Diluted (in shares) 236,574   243,859   239,967 243,820
Basic earnings per share (usd per share) $ 1.11   $ 0.93   $ 1.90 $ 1.62
Diluted earnings per share (usd per share) $ 1.11   $ 0.93   $ 1.90 $ 1.62
Stock options            
Plus incremental shares from assumed conversions:            
Dilutive effect of stock options (in shares) 238   314   269 333
Restricted stock units            
Plus incremental shares from assumed conversions:            
Dilutive effect of stock options (in shares) 41   148   164 236