Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2019

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Data (Unaudited)

	2019 Quarter Ended
(in millions, except per share amounts)	Dec. 31		Sept. 30		June 30		Mar. 31
Revenue	$	1,371	$	1,296	$	1,345	$	1,237
Gross profit	537		509		526		474
Operating income	195		11		171		109
Net income attributable to Xylem	$	118	$	65	$	139	$	79
Earnings per share:
Basic	$	0.66	$	0.36	$	0.77	$	0.44
Diluted	$	0.65	$	0.36	$	0.77	$	0.43

	2018 Quarter Ended
(in millions, except per share amounts)	Dec. 31		Sept. 30		June 30		Mar. 31
Revenue	$	1,386	$	1,287	$	1,317	$	1,217
Gross profit	542		505		519		460
Operating income	194		176		171		113
Net income attributable to Xylem	$	225	$	130	$	115	$	79
Earnings per share:
Basic	$	1.25	$	0.73	$	0.64	$	0.44
Diluted	$	1.24	$	0.72	$	0.64	$	0.43